4 W amplifier TDA1013 (CB14724E)

This circuit has tone control, and its power depends on the supply voltage. The circuit is from the Philips integrated circuits manual from 1990.

| Clique na imagem para ampliar |

3 V relaxation oscillator (CB8047E)
We found this relaxation oscillator in a 1967 General Electric documentation. The frequency is given...
555 Duty Cycle Oscillator (CB24846E)
This circuit was found in the September 1984 issue of Radio Electronics magazine. The circuit has...
FM and VHF transmitter (CB18108E)
Although the BD135 transistor is not specifically for RF applications, some of them can easily...