Code Switch (CB6535E)

Found on 80's Popular Electronics, this circuit uses an uncommon integrated today. Programming is done by a DIP switch.

| Clique na imagem para ampliar |

Automatic cooker hood (CB7023E)
This circuit was obtained in a Popular Electronics of the 90s. It against a kitchen hood based on...
741 Harmonic Distortion Meter (CB25605E)
Found in the August 1993 Electronics Now magazine, this circuit employs two symmetrical source 741...
Ultrasonic Oscillator (NI008E)
The 50 kHz signal generated by this circuit is applied to a low impedance inductive transducer. A...