This Schmitt trigger in current mode for frequencies up to 50 MHz was found in a 1969 Motorola manual. Appropriate switching transistors can be used.
The INA185 integrated circuit from Texas Instruments is a current sensor that can operate with...
This circuit trips, changing state, when the input voltage exceeds a value determined by R1 and...
Found in Linear Technology documentation from the 90s, this circuit has a 100 V common mode...