Found in a 90s Popular Electronics, this transistorized circuit generates pulses from 2 Hz to 50 kHz in three selectable ranges. The circuit has both AC and DC outputs.
New Low-Power PIC24 “GA7” Microcontroller Family Now Available CHANDLER, Ariz., Dec. 12, 2016 — The...
The purpose of this receiver is to monitor the signal from a nearby transmitter. It was published in an...
The LM567 is a PLL tone decoder that can also be used as a double oscillator as shown in the...