Help on clap switch

[neba39391]

Hi everyone, i am trying to build my own clap switch..
i found this schematic on Google and i liked it.
But i believe this schematics works only with a single clap.
what do i have to do to make it double clap switch(clap- clap ON,  clap clap OFF)

thank you for your time..

View attachment 41749

 

[Hero999]

The transistors driving the LEDs form a divide by two counter which changes state on every clap. The counter is triggered by a pulse AC-coupled to the emitters via a 100nF capacitor. All you need to do is add another pair of transistors in the same divide by two counter configuration before the transistor which drives the relay.

It would make it easier to explain if all of the components were numbered i.e. Tr1, Tr2, C1, C2 etc.

Here are a couple of links to other websites showing a similar circuit.
http://www.electronics-tutorials.ws/waveforms/bistable.html
http://ch00ftech.com/2012/07/10/transistor-clock-part-2-prescaler/

 

[mendimano1]

Hi neba 3939, this is an intresting project, i dould like to try this project, is it posible from you to post the values of components, for diodes for example.

 

[Hero999]

The unlabelled diodes aren't critical. You could use the 1N4001, 1N4148, 1N4448, 1N914, BAV20 etc.

 

[mendimano1]

Thanx for help Hero999, i wonder if is it posible from you to post a scetch shematic of this.

The transistors driving the LEDs form a divide by two counter which changes state on every clap. The counter is triggered by a pulse AC-coupled to the emitters via a 100nF capacitor. All you need to do is add another pair of transistors in the same divide by two counter configuration before the transistor which drives the relay.

It would make it easier to explain if all of the components were numbered i.e. Tr1, Tr2, C1, C2 etc.

Here are a couple of links to other websites showing a similar circuit.
http://www.electronics-tutorials.ws/waveforms/bistable.html
http://ch00ftech.com/2012/07/10/transistor-clock-part-2-prescaler/

 

[Hero999]

Thanx for help Hero999, i wonder if is it posible from you to post a scetch shematic of this.

Try to figure it out for yourself. My description should give you plenty of clues. Post the circuit and I'll check you've got it right.