• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

What tube bases to support for a new tube curve tracer

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Arnulf

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Joined 2009
smoking-amp said:
I don't know how you guys are doing the PC interfacing.
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I intend to use RS232 connection as isolated USB is extremely expensive. Besides, pulse transformers for USB simply aren't avaliable where I live so chances are others would have problems purchasing those same parts when building their incarnation of this tester.

Normal serial connection will allow the use of USB-to-RS232 adapters ($2 or so on eBay, shipped) with their higher transfer speed, yet still keep the communication portion of the PCB isolated from the rest of the circuit.
 
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