v/i curve tracer
At the beginning, I thought of making two channels running simultaneously, however after testing I found that any voltage source with a resistor as current limiter will be enough, I tried testing BJT, MOSFET, OPTO, all ok
in the design I have add a demux (relays) stage to test chips (8pins) using test clip, I want to be able to test, compare, store results
If u want to build a simple one without mcu
Maxim has App note of nice design using ADC and DAC that have serial interface and they are connected directly to the parallel port, a qbasic program is available also
but it can run under dos up to win98
I have build it with some modification, after Maxim Generously sample me the DAC and ADC chips, and is running nicely