Jonny -- Lidmotor Exciter.ASF

This is Jonny Davro's "Pan Exciter" revisited and updated. I added a couple of parts and eliminated the original aluminum pan feedback setup. I was able to do that by pulling a feedback signal off of the high voltage trigger coil. A simple loop of wire around the coil did the trick. The circuit self resonates and does not have to be tuned. I show the circuit running on one AA battery here and lighting up 12 led in series. The amp draw is about 30 mA.

Category:

Science & Technology

Tags:

• Exciter
• Slayer exciter
• oscillator circuit
• energy
• electronics

[madamerotten]

I think you drew your LED upside down. This oscillator topology is called an "Armstrong" oscillator.

[Lidmotor]

@madamerotten ------The circuit diagram is correct. The LED is positioned correctly the way that it is. This is similar to an Armstrong" but I prefer the term "tickler oscillator". Notice that there is no capacitor in this circuit. It is kind of a runaway frequency design and would not be of much use to most people. Thanks for your comment and interest.

[harpbloke]

great experiment.

do you know where to recycle that type of coil from?

thanks

[Lidmotor]

@harpbloke ----Hi. The first time that I did Jonny's "Pan Oscillator" I used a 12v car ignition coil. When that worked I pulled a tiny trigger coil out of a disposable flash camera and that worked. After that I went ahead and ordered some 10K trigger coils from a company here called Mouserdotcom. They only cost about $3 US and worked the best. You can use a 4K trigger coil and it will also work.

[madamerotten]

@Lidmotor I'll have to try this to see what's going on. If the white LED is turning on, then the base-emitter junction must be reverse-biased at least part of the time during a cycle. This is very interesting.

[kirill2851]

Это конечно здорово, но попробуй зделать мощный инвертор!

[harpbloke]

@Lidmotor many thanks. i kept breaking the yellow flash camera coils, ha.

[slinky460]

 I am still watching and learning. Thanks, Slinky.

[Lidmotor]

@andrewg85 ---Thank you for the info on a higher power transistor. 

[andrewg85]

@Lidmotor --- Sweet! Have you tried a higher power transistor? The 2SC2238 (RS Australia part# 197-9862) still has the 100MHz bandwidth the MPSA06 transistor has, but a higher power handling. The 2SC2238Y transistor has a higher gain than the 2SC2238. It might make for an upscaling of this board!