Found in a 90s Radio Electronics, this circuit is intended to drive a neon lamp from a 9 V source. The positive supply is made on pins 4 and 8.
This RF circuit measures transmission power from 0.25 W to 10 W. The maximum frequency depends on...
We found this tester or test of bipolar transistors in a European publication in 1981. The circuit is...
This is a voltmeter with high input resistance. The transistor is germanium. We found it in an...