Found in a 1966 publication, this circuit is a simple version of a field strength meter. The diode is a general-purpose germanium type.
ROHM Semiconductor is featured in a new line of IR LEDs, Proximity Optical Sensors and Ambient...
This circuit provides a good audio power from a signal at least 1 V of amplitude. The MOSFET must...
This 80's circuit uses an operational amplifier of the time. The circuit can be applied to modern...