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Old 10th January 2013, 08:31 PM   #1441
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Old 10th January 2013, 08:52 PM   #1442
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Quote:
Originally Posted by schultzsch View Post
put relay contacts as normaly closed switch between pre out and gnd

you can put some 47R-470R in series with switch

you can use heater supply for timer

if heater supply is in range of 6V , use 6V relay

if 12, then 12
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Last edited by Zen Mod; 10th January 2013 at 08:56 PM.
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Old 10th January 2013, 09:48 PM   #1443
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I`ll take this as 1`st priority
As always... ty!
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Old 10th January 2013, 10:02 PM   #1444
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I have at hand some axicom 5V smd relays but I would like to use a schematic that uses relay normal open circuit so the coil work only for 1 minute. is it posible only with transistors?
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Old 10th January 2013, 10:07 PM   #1445
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relay must be closed while preamp is off , so you must use normaly-ON contacts

when you power it - timer is counting , then energizing relay to remove muting

use sch No.3 -short instead of pictured S1-so it will start counting right after power is applied

so - now you have know-how ....... just use plain simple logic ...... and make it
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Old 10th January 2013, 10:20 PM   #1446
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yes...you are right but the relays aren`t audio type and they aren`t screened neither as for this I would like to use a counter fom 0 to 60 that after this period would stop power on the relay.as saying earlier would like to use normal open circuit so when i power on this closes, shorts output for one minute and after this removes power from relay.thought about this because I don`t want any magnetic fields near audio signal wires, conectors, if this issue isn`t a problem I will use sch. no 3
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Old 10th January 2013, 10:22 PM   #1447
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frankly - I'm tired ;

make it or not - your choice

been there , done that , gave you advice
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Old 10th January 2013, 10:28 PM   #1448
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one way or another I`ll do it, still remained 1`st priority
wish you a good night!
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Old 12th January 2013, 08:16 PM   #1449
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started at 9am finished at 9pm and there still is work to do ...
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Old 15th January 2013, 08:27 PM   #1450
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is there any problem if I solder the power resistors to the copper bars with these atached to the caps?
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