Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Good idea, Russ, it might work. The lower 1N4148 is upside down. As shown, it limits the base drive to the Darlington to 0.7v, which is not enough to turn the Darlington on. With the resistor values shown (after turning the diode around), the peak voltage at the pick-up must be greater than 400v, which may not be unreasonable.
Hi Roff, I don't know if posts are forwarded after such a long time or even if you are still around. I built the device as shown (with the diode turned round) - but sadly it doesn't work. I could only get a TIP122 would this make a difference? How much wrapping around the plug wire should there be and with what? Hope you're out there.
A neon light might work, driven directly by the spark plug wire.
My dad did it simple: He put a flashlight in his mouth, pointed it at the timing mark. He grabbed the spark plug wire and looked for the timing mark each time he got shocked
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
