Hi Ms,
Thanks for re-posting the original author's VHF Tracking Receiver project.
1) On your modified super-regen tuner, you want to short your emitter tank circuit. Then its positive feedback cap (C to E) won't work. The original circuit also has a 680 ohm emitter resistor that you shorted in yours.
2) You are talking about changing the bias of your tuner's transistor. Have you added the original sensitivity control? The author admits that reception of strong local stations is garbled unless the sensitivity control is turned down all the way and the antenna is shortened, even with a proper audio amplifier capacitively coupled to it.
Changing the bias of a transistor without an emitter resistor providing it with DC negative feedback is very difficult.
Aren't you still trying to light an LED to the beat of the noise and distortion of your 1-transistor tuner and 3-transistor amp? I am interested to see how your LED passed 150mA without smoking.
Thanks for re-posting the original author's VHF Tracking Receiver project.
1) On your modified super-regen tuner, you want to short your emitter tank circuit. Then its positive feedback cap (C to E) won't work. The original circuit also has a 680 ohm emitter resistor that you shorted in yours.
2) You are talking about changing the bias of your tuner's transistor. Have you added the original sensitivity control? The author admits that reception of strong local stations is garbled unless the sensitivity control is turned down all the way and the antenna is shortened, even with a proper audio amplifier capacitively coupled to it.
Changing the bias of a transistor without an emitter resistor providing it with DC negative feedback is very difficult.
Aren't you still trying to light an LED to the beat of the noise and distortion of your 1-transistor tuner and 3-transistor amp? I am interested to see how your LED passed 150mA without smoking.