Electronic Ring Bell using an UJT (CB439)
- Details
- Published: Wednesday, 10 June 2015 00:00
- Written by Newton C. Braga
This circuit uses two oscillators to produce a sound that seems the sound of a ring-bell. The output must be applied to an amplifier stage driving a loudspeaker. P1 and P2 adjust the effects. The circuit is powered from cells or a 6-V power supply.

Electronic Ring Bell using an UJT