Ghost in the house??? - Page 2

bowdown · 16th November 2004, 01:29 AM

Thanx guys for helping me out.My amp doesnt turn on when you unplug it and then plug it back in,However if you have a double wall plug socket on the mains and the amp is pluged into one of them and then you flick the other on/off switch on the mains a few times then the amp just turns on.I will try and get a circuit diagram of the circuit im using and post it here.

Regards

Bowdown

Bill Fitzpatrick · 16th November 2004, 02:06 AM

That pretty much clinches it. Noise on the line is triggering your flip flop.

anatech · 16th November 2004, 02:08 AM

Your circuit is definetly picking up the spikes off the AC and switching. If it makes you feel any better, I have a commercial light timer that suffers from the same thing. A filter right at the AC cord or socket entry may help here. An MOV across the line will help limit spike amplitudes.
-Chris

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16th November 2004, 01:29 AM	#11
bowdown diyAudio Member Join Date: Feb 2004 Location: Perth	Thanx guys for helping me out.My amp doesnt turn on when you unplug it and then plug it back in,However if you have a double wall plug socket on the mains and the amp is pluged into one of them and then you flick the other on/off switch on the mains a few times then the amp just turns on.I will try and get a circuit diagram of the circuit im using and post it here. Regards Bowdown

16th November 2004, 02:06 AM	#12
Bill Fitzpatrick diyAudio Member Join Date: Jun 2001 Location: Eugene, OR	That pretty much clinches it. Noise on the line is triggering your flip flop.

16th November 2004, 02:08 AM	#13
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Your circuit is definetly picking up the spikes off the AC and switching. If it makes you feel any better, I have a commercial light timer that suffers from the same thing. A filter right at the AC cord or socket entry may help here. An MOV across the line will help limit spike amplitudes. -Chris

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