This circuit was found in 90s Radio Electronics. The transistor can be any general purpose.
August 2017 - Mouser Electronics is in stock with the PGA460 and PGA460 Q1 ultrasonic processors...
This simple standing waveform (ROE or SWR) meter is used to adjust antenna matching with...
This linear scale circuit can use the current scale of a multimeter instead of the 50 uA...