Curve Tracer with Raspberry Pico
Here a preview of the curve tracer with RP2040. It works with an IL9341 tft-SPI-display with touch. Next to the Rapid_Development board for the Pico I use the constant-currentsource with HC595 and the new Power board for driving Uce. It works with 12v, powered from a 18650 lion-cell. The Power board includes an 12 bit ADC MCP3204, a Dual-DAC MCP4822 and an "power"-amplifier (TCA0372).. You can measure with it "normal" bipolar transistors ((n/p), diodes (and zener < 12V) .J-Fets and Mosfets.
the hardware is nearly ready, I have to test the program and the touch surface.
Some fields are also changeable with 2 rotary encoders.
In the next days I will present the new Power-Board for changing Uce with Dual-Dac.
Now I have changed the current-source to 4 bit.
You can change now the base-current from 0 to 150 µA with stepwide 10 µA,
from 0 to 300 µA with stepwide 20µA
and from 0 to 750 µA with stepwide 50 µA.
Some fields are also changeable with 2 rotary encoders.
In the next days I will present the new Power-Board for changing Uce with Dual-Dac.
Now I have changed the current-source to 4 bit.
You can change now the base-current from 0 to 150 µA with stepwide 10 µA,
from 0 to 300 µA with stepwide 20µA
and from 0 to 750 µA with stepwide 50 µA.
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