We found this circuit for video games in a Radio Electronics magazine from August 1977. The transistor can be any common RF type that reaches the desired signal frequency.
This circuit is suggested by Sanyo and is based on the integrated circuit LA4430, manufactured by it. With a...
This circuit can be used with 3 receivers and is intended for low frequencies (medium wave range). We...
The circuit shown is suggested by National Semiconductor in its 1994 Linear Applications Handbook. We...