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Burglar alarm bell – Circuit Schematic
Burglar alarm bell
Circuit operation principle of the device shown in Fig. Shaped permanent magnet mounted on the door ZT activity, normally closed reed AG mounted on the door fr...
The PC CPU overheating language caution circuit diagram – Circuit Schematic
The PC CPU overheating language caution circuit diagram
Circuit is shown. It consists of a temperature sensor, temperature control of electronic switches and circuits composed vocal language. In the hot summer seaso...
Bank the Chamber of Secrets to prevent security wireless transmitter circuit diagram – Circuit Schematic
Bank the Chamber of Secrets to prevent security wireless transmitter circuit diagram
Circuit is shown. It comprises an infrared sensor head, electronic switches, audible audio circuit, FM radio circuit. Install it in the bank, the Treasury and ...
Multifunction appliance protection circuit diagram – Circuit Schematic
Multifunction appliance protection circuit diagram
Circuit is shown, which consists of a DC voltage regulator circuit, the delay circuit, overvoltage and undervoltage protection part of the implementation of ci...
Inductive radio alarm circuit – Circuit Schematic
Inductive radio alarm circuit
Circuit inductive burglar alarm circuit from the radio scanning detection circuit, a signal processing circuit and alarm circuit, as shown in Figure 13-43. Rad...
Carport wireless alarm circuit a – Circuit Schematic
Carport wireless alarm circuit a
Circuit for the principle: The alarm circuit consists of two parts, the transmitter and receiver. Figure a shows the transmitter circuit, GT is a smoke break r...
Current-tampering circuit – Circuit Schematic
Current-tampering circuit
Circuit current is greater than the load carried by the rated current meter, the user immediately cut off the power supply to be subtracted overload, press the...
Wearable medical devices voice alarm circuit diagram – Circuit Schematic
Wearable medical devices voice alarm circuit diagram
Circuit as shown, mainly by the integrated voice chip ISD2560 composition. Winbond ISD2560 is produced by a chip with a strong voice recording function, it is ...
Practical gated burglar alarm circuit diagram – Circuit Schematic
Practical gated burglar alarm circuit diagram
Circuit as shown by the triggering device, monostable delay circuit, the alarm sound generator, audio amplifier circuit, light control circuit, partially block...
Open doors and windows automatic laser beam control circuit – Circuit Schematic
Open doors and windows automatic laser beam control circuit
Circuit T as principle: In this circuit, a laser diode LED, as a light hair emitter, in addition to other properties may also be used similar light emitter las...
A child lost alarm circuit – Circuit Schematic
A child lost alarm circuit
Children lost a phenomenon often happens, look around, the family should not have brought enormous suffering and economic losses; in addition, also points to u...
Electronic locks 555 monostable circuit diagram – Circuit Schematic
Electronic locks 555 monostable circuit diagram
Child lock voltage comparator 555 monostable circuit, a counter, JK flip-flop, UPS power supply design digital logic circuit, electronic door control, and a va...
Six thyristor overcurrent protection circuits – Circuit Schematic
Six thyristor overcurrent protection circuits
Capacitor C3 according to cut off the power (ie, VT cutoff) of the delay time to choose. Figure, SB is the reset button after the failure to eliminate. ...
CIC2851E refrigerator closed remind schematic – Circuit Schematic
CIC2851E refrigerator closed remind schematic
CIC2851E refrigerator closed circuit principle reminders The circuit consists of step-down regulator rectifier circuit, the delay circuit, music IC CIC2851E, s...
CH217 monolithic gas gas gas detection alarm integrated circuits the circuit diagram of gas detection alarm – Circuit Schematic
CH217 monolithic gas gas gas detection alarm integrated circuits the circuit diagram of gas detection alarm
CH217 monolithic gas, gas gas detection alarm integrated circuits, and gas detection alarm circuit diagram R1 is the gas sensing probe, the resistance increase...
LC179 utilizing temperature and humidity limit alarm circuit diagram – Circuit Schematic
LC179 utilizing temperature and humidity limit alarm circuit diagram
CD4538 is using DIP-16 and SMD-16 packages precision monoflop. With stable performance, fewer required external components, the logic function is strong, the c...
CB85-10 leakage protection circuit – Circuit Schematic
CB85-10 leakage protection circuit
CB85-10 leakage protection circuit diagram, T for the trip coil, SB is the test button, Ri is simulated human resistance ...
One of capacitive sensing oscillator circuit burglar alarm – Circuit Schematic
One of capacitive sensing oscillator circuit burglar alarm
By the 555 IC Ai, capacitors Cl, Cz and metal plate (tablet) M distributed capacitance Co and resistor Ri to ground, R2 consisting self-excited multivibrator; ...
Resistive neutral leakage protection circuit – Circuit Schematic
Resistive neutral leakage protection circuit
By resistive element as an auxiliary neutral point voltage leakage protection circuit, as shown in FIG. Resistance selection should consider the resistance, po...
Using TX05C new infrared burglar alarm circuit diagram – Circuit Schematic
Using TX05C new infrared burglar alarm circuit diagram
But here is a new type of infrared using TX05C radio sensor module made of doors and windows burglar alarm. Because it is not visible to the human eye utilizin...