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 circuit was found in a 90s American documentation. The circuit uses an LED that can be of a...
This circuit can be used to test zener diodes up to 25 V using a standard multimeter. The voltage...
This capacitive switch or approximation relay was found in a 1980s US publication. Power should...