Electronic Switch By Mobile
#mobile
#electronic switch
#remote control
#wireless
#switching circuits
#home automation
#communication circuits
#IR
#RF
#automation
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how to make remote control circuit from
The proposed remote control circuit can be utilized to control any electrical device within a range of 100 meters. This concept involves modifying an existing remote bell unit circuit, making the process straightforward. However, the construction aspect necessitates electronic assembly...
tv remote control blocker
It is necessary to adjust the 10K potentiometer while aiming the device at the television to obstruct the infrared rays from the remote control. This adjustment can be achieved through a process of trial and error.
The circuit in question involves...
The eight-way remote control circuit diagram composed of module
This is an eight-way signal remote control selection circuit composed of ZHJ-9904. It includes a remote control transmitter circuit, an eight-way switch control circuit, and a remote control transmitter.
The eight-way signal remote control selection circuit utilizing the ZHJ-9904 is designed...
Wireless-fm-microphone
An adjustable capacitor C10 and a coil L1 create a tank circuit that, along with Q1, C2, and R1, oscillates at a frequency within the FM band. The center frequency is adjustable by tuning C10. An electret microphone, M1, captures...
One kind of wireless remote control circuit
The remote control transmitter consists of a DTMF generator and an FM transmitter circuit. A UM91214B phone-specific integrated circuit (IC) is utilized to generate the DTMF signal, with a 3V power supply provided by a 3V zener diode (D1). The...
LED RF Signal Strength Meter
RF Signal Strength Meter circuits are popular RF measurement devices. This circuit is one of the simplest but very useful circuits that satisfies your desired accuracy. The heart of measurement is high accuracy but easy to use Logarithmic Detector AD8313...
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...
Wireless Coupler
Here's a way to get a short range bidirectional RF (Radio Frequency) channel on a microcontroller, using the controller's tristatable I/O pins and on-chip comparator with a few passive components. The range with the firmware and simple I came up...
2 channel RF remote control
The basic small-range remote controls are Infrared and RF (Radio Frequency). One of the weaknesses of Infrared is that the signal cannot pass through walls. Therefore, to control a garage door, an RF remote control is necessary. The circuit (transmitter...