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Inductive electronic doorbell 1 – Circuit Schematic
Inductive electronic doorbell 1
The inductive electronic doorbell circuit is composed of the inductive electronic switch and music generator circuit, and it is shown in Figure 3-115. Inductive...
Digital lock 4 – Circuit Schematic
Digital lock 4
The digital lock circuit is composed of the timing trigger circuit, trick lock circuit, sound and alarm circuit and control implementation circuit, and it is sh...
Digital lock 4 – Circuit Schematic
Digital lock 4
The digital lock circuit is composed of the timing trigger circuit, trick lock circuit, sound and alarm circuit and control implementation circuit, and it is sh...
Two-tone doorbell circuit – Circuit Schematic
Two-tone doorbell circuit
Use the 48V (60V) DC feedback electric current which is provided by the phone feedback line as the working energy of the electronic doorbell is very economical ...
Two-tone doorbell circuit – Circuit Schematic
Two-tone doorbell circuit
Use the 48V (60V) DC feedback electric current which is provided by the phone feedback line as the working energy of the electronic doorbell is very economical ...
The motorcycle anti-theft alarm (4) – Circuit Schematic
The motorcycle anti-theft alarm (4)
The motorcycle anti-theft alarm is introduced in this article, it uses the private displacement sensor and has the features of high sensitivity, good reliabilit...
The motorcycle anti-theft alarm (4) – Circuit Schematic
The motorcycle anti-theft alarm (4)
The motorcycle anti-theft alarm is introduced in this article, it uses the private displacement sensor and has the features of high sensitivity, good reliabilit...
The motorcycle anti-theft alarm (3) – Circuit Schematic
The motorcycle anti-theft alarm (3)
The motorcycle anti-theft alarm which uses the 555 time-base integrated circuit is introduced in this article, and it can send out the alarm when the thief is m...
The motorcycle anti-theft alarm (3) – Circuit Schematic
The motorcycle anti-theft alarm (3)
The motorcycle anti-theft alarm which uses the 555 time-base integrated circuit is introduced in this article, and it can send out the alarm when the thief is m...
The motorcycle anti-theft alarm (2) – Circuit Schematic
The motorcycle anti-theft alarm (2)
The multi-function motorcycle anti-theft alarm is introduced in this article, and it can be used in the anti-theft applications of all the two-wheel motorcycles...
The motorcycle anti-theft alarm (2) – Circuit Schematic
The motorcycle anti-theft alarm (2)
The multi-function motorcycle anti-theft alarm is introduced in this article, and it can be used in the anti-theft applications of all the two-wheel motorcycles...
The infrared sensor security device circuit – Circuit Schematic
The infrared sensor security device circuit
See as the circuit, it consists of the infrared sensor control circuit, relay control circuit, music generating circuit and so on, which can be used in infrared...
The infrared sensor security device circuit – Circuit Schematic
The infrared sensor security device circuit
See as the circuit, it consists of the infrared sensor control circuit, relay control circuit, music generating circuit and so on, which can be used in infrared...
The door bell circuit – Circuit Schematic
The door bell circuit
Figure 1 represents a cheap and simple Gate Alarm, that is intended to run off a small universal AC-DC power supply. IC1a is a fast oscillator, and IC1b a slow ...
The door bell circuit – Circuit Schematic
The door bell circuit
Figure 1 represents a cheap and simple Gate Alarm, that is intended to run off a small universal AC-DC power supply. IC1a is a fast oscillator, and IC1b a slow ...
TX05C-R infrared surveillance alarm circuit – Circuit Schematic
TX05C-R infrared surveillance alarm circuit
TX05C-R infrared surveillance alarm circuit is shown. It can be used for surveillance of walls, windows, doors and various restricted areas. If someone breaks i...
TX05C-R infrared surveillance alarm circuit – Circuit Schematic
TX05C-R infrared surveillance alarm circuit
TX05C-R infrared surveillance alarm circuit is shown. It can be used for surveillance of walls, windows, doors and various restricted areas. If someone breaks i...
Security Light & Switch with PIR Sensor – Circuit Schematic
Security Light & Switch with PIR Sensor
SB0061 is a pyroelectric sensor module,developed for human body detection. A PIR detector combined with a fresnel lens are mounted on a compact size PCB togethe...
Security Light & Switch with PIR Sensor – Circuit Schematic
Security Light & Switch with PIR Sensor
SB0061 is a pyroelectric sensor module,developed for human body detection. A PIR detector combined with a fresnel lens are mounted on a compact size PCB togethe...
Auto Flash Alarm - Staircase_Control – Circuit Schematic
Auto Flash Alarm - Staircase_Control
Work of the circuit The circuit consists of low-frequency oscillator, the electronic switch circuit, control circuit, photoelectric display circuit and music al...