Jump to content
Electronics-Lab.com Community

Help on clap switch


neba3939

Recommended Posts


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/

Link to comment
Share on other sites

  • 3 months later...

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/
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
  • Create New...