The circuit uses a fast Norton amplifier in a configuration that excites a 75 ohms line. The circuit is suggested by National's 1994 Linear Applications Handbook.
This circuit uses opposing MOSFETs operating on a 6 to 15 V input voltage. The circuit is from...
The sensor of this circuit is a photodiode. Equivalent operations can be used, and the instrument can be...
Charcoal microphones are rare today. In the figure we have a circuit that shows the use of one of...