We found this parking light circuit for automotive use in a Texas Instruments optoelectronics documentation. The Darlington transistor can be replaced by others in the TIP line.
This circuit, from ancient French documentation, produces a rectangular pulse from input pulses...
This control is from the Motorola Circuit Applications for the Triac of 1971. The Triacs can be...
This circuit is from 1964 documentation but can be easily implemented based on current components....