The circuit diagram shown here is a very sensitive wireless relay switch that can be used to control the working of home appliances like flush system, hand dryer or else. The wireless switch described here needs no remote control for its working. You only want to move your hand between the infrared LED and photo transistor to control the device or load.
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| Circuit Diagram of Wireless Switch: Click to enlarge |
The circuit is built around an IC CA3140, IRLED1, photo transistor and other discrete components. The working of this circuit is very simple. In order to switch on the device or appliance you simply interrupt the infrared rays falling on the photo transistor through
your hand. During the interruption, the device will remains off and when you removes your hand, the relay will be turned off hence the load.
- Assemble the circuit on a common pcb
- Current consumption is low in milliamperes.
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1 comments:
Good thread! I also look the same for a house where we will soon move.
Do you think there will be an opportunity to make the switch manageable via the Internet. I thought to connect the server for these purposes. But for this I must also connect an external switch and a router.
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