touch alarm circuit
Touch Alarm Aug 10, 2010 … Here is a simple shock sensitive alarm circuit that has many many applications fro home to automobiles.The main application of this circuit is to …
Touch Switch Apr 10, 2007 … This circuit uses a LM555 timer as the bases of the touch switch. … More 4959 Circuits schematics Circuit diagram – Burglar alarm systems …
Travel Touch Alarm The Travel Touch Alarm can be used to provide a audible alarm when someone touches the door knob or handle of your hotel room. The door knob or handle must be made of metal for the circuit to work. The main chip in the circuit is a 555 timer which will be triggered if a hand comes close to or touches the door knob….
Simple Knock Alarm With Piezo Sensor This circuit uses a thin piezoelectric sensor to sense the vibrations generated by knocking on a surface; eg, a door or table. Basically, it amplifies and processes the signal from the sensor and sounds an alarm for a preset period. In operation, the piezoelectric sensor converts mechanical vibration into an electrical signal. This sensor can [...]
Shock alarm circuit by LM358 Here is a simple shock sensitive alarm circuit that has many many applications fro home to automobiles.The main application of this circuit is to use it as an anti theft alarm in automobiles.A peizo electric sensor is used as the shock sensor which has to mounted on the door which you have to protect. Here [...]
Create music with hand touch Operation of the circuit. In the normal range will not work Piezo Tweeter speakers on tap, but not the point of A Q1 Q2 will flow and the work of the bias voltage fall across R2. And the current flowing into pin 2 of IC1 IC1 make music production work out of three legs with [...]
Touch Switch This circuit uses a LM555 timer as the bases of the touch switch. You can learn more about 555 timers in the Learning section on my site. When the plate is touched the LM555 timer is triggered and the output on pin 3 goes high turning on the LED and the buzzer for a certain [...]
Protects steal touch model by IC741 Contain divide this friends many you may face a problem economical. A steal the very. Today I then beg for to advise the circuit protects steal again model that interesting. It is model to touch , the system will work when , steal touch at the metal detects. When you see the circuit may like [...]
