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Hoffman Amps Forum image Author Topic: RELAY CIRCUIT  (Read 4714 times)

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Offline TIMBO

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RELAY CIRCUIT
« on: April 11, 2011, 12:33:55 am »
Hi guys, Got a small problem with this circuit, I did not know that when the switch/foot switch is in the open position that the LED is on,I assumed that when the switches are on the relay and led would be on  :BangHead: I was wanting to indicate when the Lead Gain/Lead Master is on.The relay is to hard to get to now to rewire it so i was hoping just to rewire the LED.Thanks

Offline sluckey

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Re: RELAY CIRCUIT
« Reply #1 on: April 11, 2011, 08:17:23 am »
See attachment... Just put the LED and two 330Rs in parallel with the relay coil. That 22uF cap is not needed.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline TIMBO

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Re: RELAY CIRCUIT
« Reply #2 on: April 12, 2011, 03:02:02 am »
Thanks for the reply Sluckey,but it only kinda works. The led/relay comes on when the switch is on, when the switch is off the led takes about 10sec to fade and the relay will only work when it has faded  :dontknow:

Offline TIMBO

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Re: RELAY CIRCUIT
« Reply #3 on: April 12, 2011, 03:17:18 am »
Please ignore that last post as i am an idiot  :BangHead: had a bad solder joint on the led. Thanks again for the help

Offline sluckey

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Re: RELAY CIRCUIT
« Reply #4 on: April 12, 2011, 04:54:59 am »
Quote
when the switch is off the led takes about 10sec to fade and the relay will only work when it has faded
Remove that 22µF cap.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline TIMBO

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Re: RELAY CIRCUIT
« Reply #5 on: April 12, 2011, 02:13:40 pm »
Done, Thanks :icon_biggrin:

 


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