This circuit is from a 1992 PE Hobbyst Handbook. The circuit fires an old electronic flash using an SCR. The circuit can be adapted for other types of applications.
The circuit shown in the figure below is suggested by ON Semiconductor (www.onsemi.com), based on...
DC motors of 6 to 12 volts and currents of up to 2 amps can be controlled with this shield...
This circuit was obtained in an English publication of the 80's, finding applications in...