Language: 
To browser these website, it's necessary to store cookies on your computer.
The cookies contain no personal information, they are required for program control.
  the storage of cookies while browsing this website, on Login and Register.

GDPR and DSGVO law

Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Google Search

Custom Search

Author Topic: SIMPLE PANCAKE COIL CIRCUIT  (Read 2774 times)

Offline magnetman12003

  • Hero Member
  • *****
  • Posts: 854
SIMPLE PANCAKE COIL CIRCUIT
« on: May 26, 2016, 06:11:16 AM »
Below is a video clip on how to make a very simple circuit that powers a 12 volt pancake coil.
Can someone illustrate how to get rid of that power robbing resistor and make the same circuit more efficient?

https://www.youtube.com/watch?v=4UmVLfFNx7U

All help appreciated

Offline citfta

  • Hero Member
  • *****
  • Posts: 915
Re: SIMPLE PANCAKE COIL CIRCUIT
« Reply #1 on: May 29, 2016, 08:08:28 PM »
Your idea that the resistor is a power robbing device is misguided.  Is the throttle on a car a power robbing device?  That resistor is there to limit the current going to the base of the transistor to keep the transistor from burning up.  So just like the throttle on a car it has a reason for being there.  And as was explained to you on another forum there is no reason to use such large wattage resistors.  A single 1/2 watt resistor of the correct resistance will allow that circuit to work just fine.

Carroll