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Author Topic: 3.7 VOLT BATTERY POWERS 56 WATTS  (Read 19863 times)

Offline SkyWatcher123

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  • Posts: 633
Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #15 on: April 02, 2017, 07:35:33 PM »
Hi dieter, i looked up his model scr and it's around $10 on internet.
I found one with a little less specifications, NTE5554 for $6.
Peak Reverse Blocking Voltage (Note 1), VRRM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400V
 Forward Current (TC= +80°C), IT(RMS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25A
 (All Conduction Angles), IT(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16A
 Peak Non-Repetitive Surge Current (8.3ms), ITSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300A
 (1/2 Cycle, Sine Wave, 1.5ms). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .350A
 Forward Peak Gate Power, PGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20W
 Forward Average Gate Power, PG(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5W
 Forward Peak Gate Current, IGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2A
 Operating Junction Temperature Range, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +125°C
 Storage Temperature Range, Tstg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +150°C
 Thermal Resistance, Junction-to-Case, RthJC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5°C/W

I wonder if this SCR will work good, i will be using a different blocking oscillator for the main circuit though, probably with a ferrite flyback core from a TV.
Because as i see it, it is the capacitor dumping part of circuit, that is giving him his output boost.
In fact, when using 3.7-5 volt input, only the capacitor dump is powering the bulbs, which is why i'm assuming, that SCR thyristor must be firing at a pretty good frequency to make the bulbs look like they are lighting continuously.

Also found this SCR, NTE5466, for $4.
Peak Repetitive Reverse Voltage; Peak Repetitive Off-State Voltage (Note 1), VRRM, VDRM. . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .600V
 Non-Repetitive Peak Reverse Voltage; Non-Repetitive Off-State Voltage, VRSM, VDSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700V
 RMS Forward Current (All Conducting Angles, TC = +75°C), IT(RMS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10A
 Peak Forward Surge Current (1 Cycle, Sine Wave, 60Hz, TC = +80°C), ITSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100A
 Circuit Fusing Considerations (TJ = -65° to +100°C, t = 1 to 8.3ms), I2t. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40A2s
 Forward Peak gate Power (t ≤ 10µs), PGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16W
 Forward Average Gate Power, PG(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500mW
 Operating Junction Temperature Range, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +100°C
 Storage Temperature Range, Tstg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +150°C
 Thermal Resistance, Junction-to-Case, RthJC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2°C/W

Free Energy | searching for free energy and discussing free energy

Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #15 on: April 02, 2017, 07:35:33 PM »

Offline magnetman12003

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #16 on: April 02, 2017, 09:14:24 PM »
Hi dieter, i looked up his model scr and it's around $10 on internet.
I found one with a little less specifications, NTE5554 for $6.
Peak Reverse Blocking Voltage (Note 1), VRRM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400V
 Forward Current (TC= +80°C), IT(RMS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25A
 (All Conduction Angles), IT(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16A
 Peak Non-Repetitive Surge Current (8.3ms), ITSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300A
 (1/2 Cycle, Sine Wave, 1.5ms). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .350A
 Forward Peak Gate Power, PGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20W
 Forward Average Gate Power, PG(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5W
 Forward Peak Gate Current, IGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2A
 Operating Junction Temperature Range, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +125°C
 Storage Temperature Range, Tstg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +150°C
 Thermal Resistance, Junction-to-Case, RthJC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5°C/W

I wonder if this SCR will work good, i will be using a different blocking oscillator for the main circuit though, probably with a ferrite flyback core from a TV.
Because as i see it, it is the capacitor dumping part of circuit, that is giving him his output boost.
In fact, when using 3.7-5 volt input, only the capacitor dump is powering the bulbs, which is why i'm assuming, that SCR thyristor must be firing at a pretty good frequency to make the bulbs look like they are lighting continuously.

Also found this SCR, NTE5466, for $4.
Peak Repetitive Reverse Voltage; Peak Repetitive Off-State Voltage (Note 1), VRRM, VDRM. . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .600V
 Non-Repetitive Peak Reverse Voltage; Non-Repetitive Off-State Voltage, VRSM, VDSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700V
 RMS Forward Current (All Conducting Angles, TC = +75°C), IT(RMS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10A
 Peak Forward Surge Current (1 Cycle, Sine Wave, 60Hz, TC = +80°C), ITSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100A
 Circuit Fusing Considerations (TJ = -65° to +100°C, t = 1 to 8.3ms), I2t. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40A2s
 Forward Peak gate Power (t ≤ 10µs), PGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16W
 Forward Average Gate Power, PG(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500mW
 Operating Junction Temperature Range, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +100°C
 Storage Temperature Range, Tstg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +150°C
 Thermal Resistance, Junction-to-Case, RthJC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2°C/W


Offline magnetman12003

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #17 on: April 02, 2017, 09:21:03 PM »
Here is what the setup looks like.

Offline magnetman12003

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #18 on: April 02, 2017, 09:31:07 PM »
the coil


Offline SkyWatcher123

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  • Posts: 633
Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #19 on: April 02, 2017, 10:14:32 PM »
Hi magnetman, thanks for sharing the pics.
Just to verify, the led bulbs are 12 volt DC input correct.
So no problems with the capacitor dump voltage being so high, the 12 volt led bulbs are not being damaged by this.
Maybe because the capacitor capacitance value being so low, is why it's not frying the leds inside the bulb.
peace love light

Free Energy | searching for free energy and discussing free energy

Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #19 on: April 02, 2017, 10:14:32 PM »
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Offline magnetman12003

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  • Posts: 717
Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #20 on: April 02, 2017, 10:18:57 PM »
Hi dieter, i looked up his model scr and it's around $10 on internet.
I found one with a little less specifications, NTE5554 for $6.
Peak Reverse Blocking Voltage (Note 1), VRRM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400V
 Forward Current (TC= +80°C), IT(RMS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25A
 (All Conduction Angles), IT(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16A
 Peak Non-Repetitive Surge Current (8.3ms), ITSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300A
 (1/2 Cycle, Sine Wave, 1.5ms). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .350A
 Forward Peak Gate Power, PGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20W
 Forward Average Gate Power, PG(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5W
 Forward Peak Gate Current, IGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2A
 Operating Junction Temperature Range, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +125°C
 Storage Temperature Range, Tstg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +150°C
 Thermal Resistance, Junction-to-Case, RthJC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5°C/W

I wonder if this SCR will work good, i will be using a different blocking oscillator for the main circuit though, probably with a ferrite flyback core from a TV.
Because as i see it, it is the capacitor dumping part of circuit, that is giving him his output boost.
In fact, when using 3.7-5 volt input, only the capacitor dump is powering the bulbs, which is why i'm assuming, that SCR thyristor must be firing at a pretty good frequency to make the bulbs look like they are lighting continuously.

Also found this SCR, NTE5466, for $4.
Peak Repetitive Reverse Voltage; Peak Repetitive Off-State Voltage (Note 1), VRRM, VDRM. . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .600V
 Non-Repetitive Peak Reverse Voltage; Non-Repetitive Off-State Voltage, VRSM, VDSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700V
 RMS Forward Current (All Conducting Angles, TC = +75°C), IT(RMS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10A
 Peak Forward Surge Current (1 Cycle, Sine Wave, 60Hz, TC = +80°C), ITSM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100A
 Circuit Fusing Considerations (TJ = -65° to +100°C, t = 1 to 8.3ms), I2t. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40A2s
 Forward Peak gate Power (t ≤ 10µs), PGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16W
 Forward Average Gate Power, PG(AV). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500mW
 Operating Junction Temperature Range, TJ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +100°C
 Storage Temperature Range, Tstg. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40° to +150°C
 Thermal Resistance, Junction-to-Case, RthJC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2°C/W

This is a HYBRID circuit I made using a lot of thoughts from many different people.  Jonny Davro thought of using the automobile coil to limit hi current to the 35C transistor.   I thought to use this Bedini style circuit with many different parts and a different plastic coated coil wire - my choices.  The low current transistor 35C powers the hi current coil part of the circuit and the hi frequency, voltage, and current BACK EMF (radiant energy??) is dumped into the bridge rectifier and capacitor.

This is where this becomes interesting:    Since I figured the radiant energy from the coil needs to be used some place I found a article (now deleted) from the internet about how to gather and use radiant energy using an antenna system.  It was posted by Andrew Munsey.   So I directed the cap to dump is collected radiant energy into the SCR and see what happens.  I burned up a brand new watt meter doing this only to find the circuit worked with the shorted watt meter in place????  I substituted A section of wire in its place and the circuit has worked flawlessly to this date.
I even had it working using a very small 12 volt 27A cell.     It also will work with 24 volts DC but take care unless you burn up your 12 volt bulbs,




Offline magnetman12003

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #21 on: April 02, 2017, 10:30:20 PM »
Hi magnetman, thanks for sharing the pics.
Just to verify, the led bulbs are 12 volt DC input correct.
So no problems with the capacitor dump voltage being so high, the 12 volt led bulbs are not being damaged by this.
Maybe because the capacitor capacitance value being so low, is why it's not frying the leds inside the bulb.
peace love light
   Correct  - 12 volt input.

Free Energy | searching for free energy and discussing free energy

Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #21 on: April 02, 2017, 10:30:20 PM »
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Offline Zephir

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #22 on: April 03, 2017, 01:16:16 AM »
3100 mAh 18650 battery can give 20A at 3.7 volts easily, which corresponds 20 x 3.7 = 74 watts of power

Offline gyulasun

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #23 on: April 03, 2017, 01:26:08 AM »
Hi magnetman,

Please check the wiring connection of the thyristor pins in your schematic versus your setup
(you uploaded the schematic in previous page, Reply #10) because I think there is a drawing error.

The K pin (Cathode) ought to go to the negative rail (I mean the emitter pin of the TIP35C transistor
as negative rail) and the center pin A (Anode) of the thyristor ought to go the negative end of capacitor C1
(which is on the left hand side of C1 symbol). I think this would be the correct wiring.
The Glimm lamp is okay between A and G  (G=Gate).
(In your schematic, the K pin goes to the negative end of the capacitor C1 and the A pin goes directly
to the negative rail.)

I edited your drawing to show how I mean.  Here is a data sheet on the thyristor:
http://www.st.com/content/ccc/resource/technical/document/datasheet/e4/31/81/91/1a/e2/49/17/DM00085949.pdf/files/DM00085949.pdf/jcr:content/translations/en.DM00085949.pdf   

If you disagree with my schematic modification, please tell.

Gyula

EDIT   Thanks to member citfta's explanation I deleted my drawing because it was not a correct modification.
« Last Edit: April 03, 2017, 12:23:15 PM by gyulasun »

Offline magnetman12003

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #24 on: April 03, 2017, 02:32:25 AM »
Hi magnetman,

Please check the wiring connection of the thyristor pins in your schematic versus your setup
(you uploaded the schematic in previous page, Reply #10) because I think there is a drawing error.

The K pin (Cathode) ought to go to the negative rail (I mean the emitter pin of the TIP35C transistor
as negative rail) and the center pin A (Anode) of the thyristor ought to go the negative end of capacitor C1
(which is on the left hand side of C1 symbol). I think this would be the correct wiring.
The Glimm lamp is okay between A and G  (G=Gate).
(In your schematic, the K pin goes to the negative end of the capacitor C1 and the A pin goes directly
to the negative rail.)

I edited your drawing to show how I mean.  Here is a data sheet on the thyristor:
http://www.st.com/content/ccc/resource/technical/document/datasheet/e4/31/81/91/1a/e2/49/17/DM00085949.pdf/files/DM00085949.pdf/jcr:content/translations/en.DM00085949.pdf   

If you disagree with my schematic modification, please tell.

Gyula
The black dots on the schematic are where connections are made.  The bent line you pointed out is a jumper.
no connection at midpoint is made.

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #24 on: April 03, 2017, 02:32:25 AM »
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Offline citfta

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #25 on: April 03, 2017, 02:54:20 AM »
Hi Gyula,

I am afraid I have to disagree with your correction.  His schematic seems to be correct to me.  If you consider the output circuit to be separate from the input makes it easier to see what is happening with the SCR.  The input and output are sharing the same negative rail but they don't have to for the circuit to work.  In your mind break the negative rail just to the right of the connection of the neon that goes to diode D2.  Now look at the SCR circuit.  You can now see that the SCR has to have the cathode connected to the negative side of  C1 or it could not turn on.  Also as you have corrected it there is no way for a positive signal to get to the gate to turn on the SCR.

Respectfully,
Carroll

Offline SkyWatcher123

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #26 on: April 03, 2017, 05:46:02 AM »
Hi all, thanks for the clarification magnetman.
I will be picking up an SCR soon to build this device and couple other parts.
One more thing magnetman, is the neon lighting up fairly constantly, if you can even see it light up that is.
I guess it is, or you would probably see the led bulbs increase and decrease in brightness.
Are the led bulbs lighted in a stable way or can you detect any fluctuations.
Anyway, i will be building this.
peace love light


Offline magnetman12003

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #27 on: April 03, 2017, 06:47:50 AM »
Hi all, thanks for the clarification magnetman.
I will be picking up an SCR soon to build this device and couple other parts.
One more thing magnetman, is the neon lighting up fairly constantly, if you can even see it light up that is.
I guess it is, or you would probably see the led bulbs increase and decrease in brightness.
Are the led bulbs lighted in a stable way or can you detect any fluctuations.
Anyway, i will be building this.
peace love light
  The neon bulbs light up at different intervals depending on what you are experimenting with. But most of the time you cant see them lit.  As far as the 8 led bulbs go they seem to keep good brightness constant at least to my eyes when powered by 1.2 AH 12 volt battery or wall wart.  8 bulbs will light up dimmer when a power source with little current is used.  Say you powered it with a very small 27A - 12 volt battery or same with 5 volts out of a USB  battery charger. I have been experimenting with this circuit now for 3 years and it still keeps on working like the battery bunny on TV

Its the most interesting circuit I have ever put together that keeps you guessing what its capable of doing



Offline gyulasun

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #28 on: April 03, 2017, 12:29:02 PM »
Hi Gyula,

I am afraid I have to disagree with your correction.  His schematic seems to be correct to me. 
If you consider the output circuit to be separate from the input makes it easier to see what
is happening with the SCR.  The input and output are sharing the same negative rail but they
don't have to for the circuit to work.  In your mind break the negative rail just to the right of the
connection of the neon that goes to diode D2.  Now look at the SCR circuit.  You can now see
that the SCR has to have the cathode connected to the negative side of  C1 or it could not turn on. 
Also as you have corrected it there is no way for a positive signal to get to the gate to turn on the SCR.

Respectfully,
Carroll

Hi Carroll,

Yes, you are correct. Unfortunately, in my mind I mixed up the position of the thyristor switch as if
it would be in series with the load  while in magnetman's circuit it is in series with capacitor C1 which
is the voltage source for the load.

I deleted my incorrect drawing from my post.

Thank you.

Gyula


Offline citfta

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #29 on: April 03, 2017, 02:09:33 PM »
Hi Gyula,

You are welcome.  I made a similar mistake a couple of weeks ago.  I had a circuit all designed on paper.  It was only after I started putting parts together on a piece of perboard that I realized my circuit wouldn't work like I wanted it too.  So it was back to the drawing board again. :-[   I guess most of us do that from time to time.

Take care,
Carroll

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Re: 3.7 VOLT BATTERY POWERS 56 WATTS
« Reply #29 on: April 03, 2017, 02:09:33 PM »

 

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