Low voltage drop regulator (CB21216E)

This simple LDO, or low voltage drop regulator was found in an Electronic Design from the 90s. The circuit uses components from the time.

| Clique na imagem para ampliar |

Small Complementary Symmetry Amplifier (CB13669E)
This circuit of a few watts of output is from a publication of 1971. We can assemble it with...
RF Sniffer (CB20248E)
When approached by a circuit that operates with RF signals, this circuit captures them by...
4-transistor amplifier stage (CB23539E)
This audio circuit was published in a Rado Electronics issue from October 1963. The transistors are from...