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A Low Power Wireless Audio Power Amplifier circuit
This low-cost project enables audio reproduction from a television without disturbing others. It eliminates the need for wired connections between the TV and loudspeakers. Instead, it utilizes invisible infrared light to transmit audio signals from the TV to the loudspeakers....
Remote Operated Spy Robot Circuit
A remote-operated spy robot circuit can be controlled using a wireless remote controller. It captures audio and video information from the surroundings and transmits this data to a remote station via RF signals, with a maximum range of 125 meters,...
Wireless controlled Door-bell
The controlling range of the wireless doorbell is 100 meters. The transmitter section is designed around an oscillator transistor (BF194B) T2, which is followed by two transistors (BC148) T1 and T3. Transistor T2 generates a specific radio frequency determined by...
GSM Remote Control Gate Control Schematic
Power is supplied by continuous voltage, which is not always stabilized, applied to PWR + and - at a value between 5 and 32V. This voltage is filtered at the bottom by a diode (D1) that protects against polarity inversion,...
Wireless remote control switch circuit 5
The wireless remote control transmitter circuit consists of control buttons S1 to S16, resistors R1 to R3, a capacitor C1, a regulator diode VS, a crystal oscillator BC1, and DTMF encoder integrated circuits IC1 and IC2. The circuit components are...
Wireless On-Off Switch
Typically, home appliances are controlled using switches, sensors, and similar devices. However, physical contact with switches can pose risks, especially in the event of a short circuit. The circuit outlined here eliminates the need for physical contact to operate the...
GSM Automatic Meter Reading
GSM based Automatic meter reading, or AMR, is the technology of automatically collecting data from energy meter and transferring that data to a central database for billing and/or analyzing. The Transmitter is connected to the meter and it counts the...
Wireless two-tone electronic doorbell circuit diagram
The transmitter circuit is activated by pressing the SB button. Components D1, D2, R2, R3, and C4 form a low-frequency oscillator that controls an audio oscillator made up of D3, D4, D5, and D6, allowing them to operate alternately. The...
the design of the intellectual wireless signal transducer of ARM
The intellectual wireless signal transducer is designed for major transducer applications and typical sensor output signal designs. It is essential to first analyze the outgoing signals from the transducer. Typically, the output of the transducer is a standard electric current...