This circuit was obtained from the April 1978 Radio Electronics magazine. The other circuit is a PLL of the time. The power supply must be 15 V symmetrical.
An oscillator that uses two gates is not suitable for critical applications, as it tends to pick...
We found this circuit in a 1991 Hobbyst Electronics. The circuit makes use of an unusual...
We found this circuit in a 1982 documentation. An intercom to be good must be sensitive and have...