100 mA regulator (CB21168E)

This 2-terminal regulator was obtained from a 1990s National Semiconductor manual. The components admit modern equivalents.

1.3 V Regulator (CB25901E)
This circuit is based on the voltage drop of the diodes in conduction, in the order of 1.6 to 1.7...
1.2 W amplifier TBA820M 2 (CB15213E)
The output power of this amplifier depends on the supply voltage that can be between 3 and 16 V....
Solar receiver (CB20487E)
This circuit is more elaborate than the previous one, employing an integrated amplifier circuit of the...