After a long process, here it is. The curve tracer is finalised. It includes the following features:
Valve curve tracer
- Sockets: 4 pin, 5 pin, 7 pin, octal, loctal, 9 and compactron (10 and 12 pins)
- Anode sweep: 0-330V
- Anode current: 100mA (max)
- Grid step generator: 8 steps, 0 to -80V and 0 to -5V steps
- Grid output for calibration
- Oscilloscope: X (x10 attenuation) and Y
- Y amplifier:
- x1/x10 differential amplifier
- 1Ω / 10Ω sense resistor
- Polarity inversion optional
- Image sync adjust (coarse and fine)
Valve transconductance tester & THD meter
- Anode current CCS 0-100mA (0.1mA resolution)
- Anode voltage 0-600V (1V resolution)
- Grid bias: 0 to -80V (0.1V resolution)
- Transconductance meter:
- 0-2,000 μmho scale (1 μmho resolution)
- 2,000 – 40,000 μmho scale (100 μmho resolution)
- Input test signal: 100mVrms @1kHz
- THD meter:
- Soundcard I/O BNC connectors
- CCS load or external load
