Охранные устройства и сигнализации

The coded lock on tiristor

03/07/2017 - 17:03
At installation of the coded lock not always there is a possibility to locate the push-button panel near the management circuit. In this case application of tiristor as triggers remembering the correct combination on an abusive code provides higher noise stability and resistance to the deliberate...

Coded lock

03/02/2017 - 10:47
Coded locks are rather widely applied to restriction of access of extraneous persons to protected objects. Convenience of using such locks consists in possibility both individual, and collective access (pass to service premises, access to left-luggage offices, etc.). Fig. 1....

Sensors for the security alarm system

02/28/2017 - 07:44
There are many different types of sensors for the security alarm system. The majority of them will be not not considered because of complexity of manufacturing in house conditions by us, and will stop on the simplest. So, glass of the car can protect and the ordinary tiny button (MP-1) established on...

The security alarm system for the farmer

02/28/2017 - 06:28
When I faced need of manufacturing of such device, that, having studied the whole pile of literature, came to a conclusion that any of earlier published circuits completely is not suitable for these purposes. Therefore also it was necessary to be engaged in manufacturing of own system which would possess simplicity...

Simple system of the radio notification

02/22/2017 - 10:03
Sometimes for the remote notification at garage or car protection enough elementary system. In this case can be useful offering my device consisting of a radio transmitter, 26945 kHz working at fixed frequency and the narrow-band receiver. Electric circuit of the transmitter...

Voice relay

02/22/2017 - 01:27
I offer the simple acoustic automatic machine for turning on of various actuation mechanisms. The essence of work of the circuit (fig. 1) consists in the following. At a certain level of acoustic noise near the high-sensitivity BM1 sensor microphone, threshold which level of inclusion is established...

Director of a radio noise

02/20/2017 - 22:57
The director of a radio noise is intended for work in system of active protection of information. The director of a radio noise in the included condition creates electromagnetic hindrances on air with intensity sufficient for masking of informative radiations from used office equipment, including from the electronic...

Capacitor relay

02/12/2017 - 11:41
Security alarm system. switches for household devices, control sensors on the production conveyor — here only small part of scope of this capacitor relay. It can be used, for example, in the elementary household automatic equipment: sat down in a chair — the floor lamp joined, music played...

Apartment protection with the notification on the telephone line (the 2nd option)

02/12/2017 - 04:51
It is known that to not all citizens, decided to establish in the apartment the alarm system, on a pocket to use the help of specialized security firms. The author of offered article developed the device which allows to get the suburb system, without resorting to them...

The smoke sensor for the alarm system about a fire

01/29/2017 - 06:12
From a fire the damage can be even more, than from thieves, and in time the submitted alarm signal will allow though something to rescue. Fig. 3.21. An electric circuit of the sensor of a smoke On industrial facilities thermal sensors (they are cheapest) are generally used for the alarm system about a fire. Their feature...
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