This circuit was found in Motorola documentation from 1969. The transistors are from that time. The pulses are 200 ns with 500 mA. Observe the high supply voltage.
The circuit below is suggested by National Semiconductor in its 1994 Linear Applications Handbook. The...
This 9 + 9 V symmetrical power supply was obtained in a 1977 symmetric publication but can still be...
This circuit was obtained from a Popular Electronics of the 1990s. The circuit uses a temperature...