Infrared Intruder Alarm
circuit Infrared Intruder Alarm This the circuit warns the trespasser infrared system or Infrared Intruder Alarm circuit that interesting. By when there is a person passes or cut the light infrared. The system will clearly warn immediately, command give relay work, build current give super siren or The other , this circuit then suit is burglar alarm circuits. When see the equipment the a few compose IC 555 perform produce the frequency drives LED infrared in a part sends. The part takes as a result have photo diode perform take the light infrared. Then transmit transistor for boost up a …
Car Battery Alarm
For Check battery in car, It use IC CA3140 and Transistor, Easy circuit. For electricity pressure of automobile battery is important many factor. If be high class electricity tall pressure will have expired may cause the damage and electricity automobile system. I thinks Car Battery Alarm Circuit this may born the advantage certainly. When be born voltage of the battery expires. As a result will have an electric bell makes a noise to talk at one time come to. By pillar equipment that perform to check the level voltage this be IC CA3140 do in front compare with the level …
Single IC Power Supply by 78xx
This be DC power supply Regulator , that older use 78xx integrated species circuits perform to wait for control the level voltage be stable always. By you have can to fine decorate the pressure follows to want with VR1 follow the circuit.