Voltage Level Indicator (CB21453E)

This circuit using programmable unijunction transistors was found in General Electric documentation from 1964. LEDs can be used instead of lamps.

| Clique na imagem para ampliar |

bq51222 Wireless Receiver Qi
April 2017 - Texas Instruments bq51222 integrated circuit for chargers and other Qi wireless power...
Two-Tone Decoder (CB19928E)
Using two 567 PLLs, this circuit recognizes two audio tones in sequence providing a signal for a...
Door buzzer or alarm (CB20492E)
This solar powered circuit was found in a 1991 documentation. The transistor is a general purpose...