Electro-Harmonix

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May 13, 2014 at 8:33 pm in reply to: Running a Tube Zipper on 12V AC 250mA power supply #119970

czymaupy
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I have LM324N from Texas Instrument now but you should remember that this chip is only for filter envelope – not for sound/distortion creation.

May 13, 2014 at 5:35 pm in reply to: Running a Tube Zipper on 12V AC 250mA power supply #119967

czymaupy
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Quote:

My Zipper just started acting sick. The envelope filter doesn’t work and the output has dropped a lot. Everything cranked up is still less than unity. I was going to replace the tubes but maybe it was my Cioks AC10 that was the problem…

I had the same issue. It’s not tubes problem – probably are OK. In my case problem was LM324N chip (4xAmp). Cost about 1PLN = 0,25€ and few wires inside TZ. U can replace Chip by yourself – on IN/OUT side of motherboard U can find 14pin socket with LM324.

TZ is fully analog guitar FX – very easy electric circuit but U need make attention – on board U can find about 260V AC – risky for your heart

LM324 Datasheet:
http://www.engineersgarage.com/sites/default/files/LM324_1.jpg?1281349133

May 12, 2014 at 7:50 pm in reply to: Running a Tube Zipper on 12V AC 250mA power supply #119964

czymaupy
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TZ need 1A at start & about 720mA for normal work.
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