We found this circuit in a 1980s Motorola documentation. The circuit makes use of common operating and the voltage depends on the used type. The components are for a frequency of 500 Hz.
This simple circuit was found in an English magazine that no longer exists, January 1970 issue. This...
Found in a 90’s Electronic Design, this circuit generates stable signals in frequency given by the...
This circuit was found in Philips documentation from 1965. No information was given about the...