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Posts tagged circuit 4u

Control Jammer Circuit Module

Control Jammer Circuit Module Android Signal Jammer – silent mode jammer app using LM555, MRF947 Mobile jammer circuit design using BF494 Mobile jammer circuit use only in GSM1900 with frequency from 1930 MHz – 1990 MHz. The GSM1900 mobile phone network is used USA, Canada TV Remote Control Jammer  using 555, C829 This circuit functions […]

Reparations VCD and DVD

Reparations VCD and DVD Tips and Repair guide VCD, simply put, there is the following message: no disk errors, no disk message, philips dvd player says no disc, dvd no disc error, Lecteur dvd no disk, disk utility without dvd, dvd player no disk, Generally dvd player shows no disc No optical disk due to […]

Light sensor circuit diagrams

Light sensor circuit diagrams Light sensor circuit diagrams This circuit has two distinct functions, either using the same light sensor, a circuit module is useful for light and turn off the lights (relay), and that only produce sound. Usually applies to a security alarm place. Components used: Sensor LDR 2N3904 Relay Audio alarm using LM386

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