This circuit was found in old Maxim documentation. Check the availability of the IC if you are going to build the circuit. The output current is 1A.
This small crystal microphone transmitter was indicated in an 80s spy book. The range depends on...
The figure shows how to use an operational amplifier with a low impedance head. The gain is...
Voltage comparators, such as those in the LM139/239/339 series, consist of devices that can be...