This circuit uses a 7-segment display to indicate the logic level of a test circuit. The power supply is made with 5 V that can come from the analyzed circuit itself.
The Texas Instruments TIOS101 is a driver that can be connected to both high and low side sensors...
We found this circuit in the National Semiconductor Audio Handbook of 1977. The circuit produces...
When the sensor X1 is opened, the relay is energized. When waiting, the current drained is very...