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Re: Sweet!

Posted by Jacques (A) on August 28, 2006 at 01:35:50

In Reply to: Sweet! posted by Ronnie Ericsson on August 25, 2006 at 12:30:19:

30V is the absolute max value. 24V is the practical max value.
With 24V:
Use a 33kohm resistor as collector load, you'll get about 0,6mA collector curent when on, which is fine.
As for the LED, use a 2,2KOhm resistor in serie with the anode. You'll get 10mA LED current, which is fine.

I would advise you to use some timer (a simple 555 would make the job fine) in order to get a pulse with a predetermined duration, which would be used to lift the tonearm.
In this case, have the voltage at about 12V. Decrease resistors in accordance.

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