Suggested for use in cars and motorcycles, this circuit was found in a 90s Popular Electronics. The MOSFET can be anyone that supports the current of the lamps. Adaptations can be made to use LEDs.
This circuit can generate signals from 2 to 15 MHz or 4 to 22 MHz depending on the used components...
This interesting configuration was found in a 1965s Electronic Design. It makes use of components of...
The figure shows how to obtain a digitally programmed resistance using the 4066. The circuit is...