torsdag 15 april 2010

I made a INA217 preamp board tonight. Since i don't have the schematics and are working a bit blindfolded I assume 1:1 ratio on the input transformers and start with no amplification on the preamp. I've left space for gain resistor though. I omitted coupling caps on the input because I have abandoned the idea of internal phantom supply due to space constraints.

Not to pretty but the circuit is to simple to motivate a pcb.
Notice the surface mount ceramics on V+ and V-.

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