2ch In/Out Trafo, Battery powered (or wall wart) Preamp

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owel

Well-known member
Joined
Jun 3, 2004
Messages
1,088
Location
Nashville, USA
Just finished building this last night and tested it today.  ;D

Works at 12VDC. 
Would also work at lower voltage... 4.5Volts down to 3Volts. (but mA consumption increases)

TS2Proto1.jpg


TS2ProtoWorking.jpg

Powered by a portable Tekkeon battery.

Still Need to design the daughterboard that will contain the switches, indicator leds and 48Vdc-dc converter.

 
> and 48Vdc-dc converter

The EC4A05H converter is isolated. Another one stacked above the +15V rail gives 15V+15V+15V= 45V, which is enough for 98% of all Phantom mikes out there.
 
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