AM Radio with LM4862 and ZN414 (CB26112E)

This medium wave receiver was featured in the November 1999 issue of Electronics Now magazine. It is powered by just two small batteries.

| Clique na imagem para ampliar |

3-Transistor Flasher (CB18953E)
T1 and T2 can be BC557 and T3 a TIP32 for lamps up to 3 A. The supply is made by voltage of 12 V...
50 Hz high pass filter (CB7575E)
This fourth-order filter was found in American documentation from the 90s. The circuit applies to...
Audio Ohmeter CIR498 (CIR808E)
This resistance meter uses a two-transistor oscillator as basic configuration. The tone produced...