30 MHz Amplifier (CB5939E)

This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon today and the gain is 19 dB..

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1 W Amplifier (CB6295E)
The TAA300 integrated circuit is not common today. In fact, the circuit shown is from a Dutch...
Non Inverting Amplifier LM308 (CB4492E)
The gain is given by R1 and R2. The circuit is from the 1993 Motorola Linear Interface ICs. The...
Rain Detector (CB25963E)
We found this circuit in the May 1996 Electronics Now magazine. The relay must have a voltage...