We found this circuit in documentation from the 90s. It is a common configuration that is given in two versions, using transistors and using two integrated inverters.
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...