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.
Found in Radio Electronics this circuit uses a fotodiac to drive a triac. The circuit can use...
Based on components from Linear Technology, we find this circuit in a 2005 manual. The circuit...
Found in Popular Electronics from the 90s, this generator uses integrated circuits from that time....