We found this circuit in a 90s Popular Electronics. The circuit can be implemented with modern components. The power MOSFET is according to the controlled load.
This is the application note circuit of the integrated circuit used with the LASER diode. The...
Suggested by a 1990 book for amateurs, this circuit makes use of an integrated component that is...
Found in Popular Electronics from the 90s, this circuit generates two tones that are selected by a...