![]() There are 2 different firmware choices for the transistor tester. The 0.1% resistors (black) are a bit thicker than the default (blue), so they overlap a little bit. This is how it looks with these changes in place: R16: Due to missing voltage reference, this 2k2 resistor is not necessary with the m-firmware.IC3: TL431A voltage reference is not necessary because of MCP1702.IC2: MCP1702 high precision voltage regulator instead of HT7550 low precision voltage regulator.The concrete changes, referenced to the schematics: 1x Microchip MCP1702-5002E/TO - LDO Voltage Regulator 5V 250mA 0.1%. ![]() ![]()
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