This circuit was found in 90s Radio Electronics. The transistor can be any general purpose.
This circuit for battery powered laser diodes was found in a 1992 RE Experimenters Handbook. The...
Found in a 73 magazine for radio amateurs of the 90s, this circuit provides a 2 kV voltage with 7.5...
The figure shows a white noise generator circuit that uses a transistor junction to generate the...