The figure shows how to drive a load up to 300 mA with an LM3900. The transistor can be a BD136. We found this setting in the 1994 National Semiconductor Linear Applications Handbook.
This tone-modulated transmitter was found in recent English documentation. The circuit operates in the 27...
This simple CMOS digital game was found in an English publication in 1992. The circuit uses a...
This good quality stereo amplifier was found in a Japanese publication from the 1960s. The circuit...