Detector

Wireless Bug detector

This fairly simple circuit makes it possible to place such a wall as a conduit to locate. It is a conduit for power, no water or gas-seeker. The only requirement is that there is tension on the line. The antenna in the table can consist of a simple piece of copper wire. The correct adjustment is done through R7, in order to prevent the buzzer and LEDs still light up even though there is no leadership in the area. ..
Source: http://www.circuitsonline.net/schakelingen/113/meten-en-testen/leidingzoeker.html

Be the first to comment - What do you think? Posted by admin - September 16, 2011 at 2:33 am

Categories: Alarm systems, Detector Tags: Wireless Alarm Systems, Wireless Bug detector

Simple remote control tester circuit

When the remote control is not working, first check the battery before, It may be loss.If it is good,so detect transmit infrared light device.However, because the human eye can not see infrared light,so can not know how good or bad.But the photo transistor can use to detect infrared light.
This circuit so use this photo transistor is the light receiver from the remote control.If it is nice to have the bias current of the transistor BC558.It runs a current flows through the LED,so the LED bright.The remote control that works correctly. The variable resistor VR1 is used to adjust the sensitivity of the circuit.

Be the first to comment - What do you think? Posted by admin - September 10, 2011 at 12:31 am

Categories: Detector, Meter Tags: ir remote checker, IR remote control Tester

Infrared motion detector

The GLMDA is designed to detect the motion of a human or animal both in daylight and at night and to provide a normally open relay output that can be used to activate many types of loads. The GLMDA also has terminals for connecting an optional photocell to prevent activation of the load during daylight. ..
Read more source: http://www.glolab.com/glmda/glmda.pdf