3 W to 8 MHz Amplifier (CB6133E)

This 1965 Philips circuit uses old company transistors like the BFY51 and BFY50. The circuit is powered by 12 V and the power gain is 8.9 dB.

| Clique na imagem para ampliar |

Darlington Amplifier Stage (CB974E)
I found this circuit in a doc umentation from the year 1968. It uses germanium transistor and has...
Audible Voltmeter (CB13792E)
This circuit produces sounds that depend on the measured voltage and that can be compared with a...
Piezoelectric Buffer (CB21152E)
This circuit was found in American documentation from the 90s. It serves as an amplifier for a...