Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: TIMBO on April 11, 2011, 12:33:55 am

Title: RELAY CIRCUIT
Post by: TIMBO 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

Title: Re: RELAY CIRCUIT
Post by: sluckey 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.

Title: Re: RELAY CIRCUIT
Post by: TIMBO 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:

Title: Re: RELAY CIRCUIT
Post by: TIMBO 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

Title: Re: RELAY CIRCUIT
Post by: sluckey 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.

Title: Re: RELAY CIRCUIT
Post by: TIMBO on April 12, 2011, 02:13:40 pm

Done, Thanks :icon_biggrin: