Two Transistors T20 Radio (CB18386E)

This commercial earphone receiver was manufactured in the 1960s in Japan. It was powered by a 9 V battery and the transistors were made of germanium.

| Clique na imagem para ampliar |

Two-color indicator (CB7824E)
This two-color LED indicator was found in a Popular Electronics from the 90's. The transistor...
Frequency divider for 10 MHz standard (CB21041E)
This circuit was found in a Radio Electronics from the 90's. It provides lower frequency signals from...
Monostable with the 4098 2 (CB11446E)
This monostable circuit uses one of the two flip-flops available on the CMOS 4098 integrated...