In this alarm R1 and R2 can be 10k. The SCR is any 106 Series SCR and V1 is an oscillator buzzer. C1 may have values between 10 and 47 uF. The circuit is from an old American documentation.
In this alarm R1 and R2 can be 10k. The SCR is any 106 Series SCR and V1 is an oscillator buzzer. C1 may have values between 10 and 47 uF. The circuit is from an old American documentation.
