This small source for low consumption projects was found in an old national documentation. The transistor is for general use and the transformer has 50 to 100 mA of secondary current.
This circuit can be used as shield or to drive powerful loads from low current switches such as...
This low power bass booster is from the 1977 National Semiconductor Audio Handbook. The circuit is...
This three-chanel remote control transmitter uses a unijunction transistor as low frequency...