We found this 12 V ignition circuit in the 1964 RCA transistor manual. The 2N3054 can be replaced by the TIP41C. The two transistors must be provided with heat sinks.
This circuit for analog video signals was found in the August 1970 issue of Radio Electronics...
This circuit was found in a 1991 PE Hobbyst Handbook. The components are still common and each...
This is a slightly different configuration of full-wave power control than we found in an old...