Quick Start Siren (CB25765E)

We found this circuit in the October 1994 Electronics Now magazine. The CMOS IC is uncommon these days and the output is low power.

| Clique na imagem para ampliar |

12 W Amplifier (CB6303E)
This 12.5 W quasi-complementary amplifier was found in a 1969 General Electric publication. Note the high...
1 kHz High Pass Filter (CB1452E)
This filter has a cut-off frequency of 1 kHz by letting pass those that are above this value. The...
Wireless CW Monitor (CB4179E)
Placed near a telegraphic transmitter (CW) and with a small antenna or pickup, it reproduces the...