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Video Wall circuits
TV Video Circuits
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8051 / 8052
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555 Timer Circuits
Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
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Remote Control Circuits
Remote Control Circuits
RF Remote Control Switch Rx-Tx circuits
This circuit consists of a 2048 radio remote control transmitter and the corresponding wireless receiver with very high reception sensitivity and low consumption. The combination of the two above gives a high-reliability remote control, ideal for security systems, alarms, automation, etc. At home, in the car and elsewhere. Using the wireless...
P228 infrared remote control with production of energy-saving lighting
Core device is a circuit pyroelectric infrared sensor BH, when it felt the trace infrared body issued a sensor inside the element will obviously feel that their process of chan
Magneto circuit diagram of a remote control switch
Features automatic weapons such magnetic switch circuit is very simple, reliable, low failure rate, good versatility, can be used to output the performance or can be converted
Asia ultrasonic remote control fan speed control circuit diagram
Fans can achieve remote control switch, speed control, remote control can also be achieved in other household switches. Its main feature is the use of sub-transmission side ult
200 meters remote control schematic design
Early transmitters use more LC oscillator frequency drift is more serious. SAW devices appear to solve this problem, the frequency stability of the crystal substantially the sa
Audio remote control switch schematic
Each issue a specific frequency of sound, audio remote control will switch changes state, the circuit for other frequencies emitted by the environment sound with strong anti-in
Remote control Encoder M145026B-1
This encoder can generate up to 19,683 codes from 9 address lines by detecting 1,0, or open circuit. To initiate the transmit sequence, pin 14 should be pulsed low. The encoder will now output on pin 15 a data stream representing the condition on each of the address/data pins in turn and then repeat the operation, so that two complete identical...
The circuit is built around the LM567 tone decoder IC that requires about 100 millivolts at its operating frequency. The frequency is set by a 10 K variable resistor and can be between 700 and 1500 He
Remote on-off switch
This circuit provides power control without running line-voltage switch leads. The primary of a 6-volt filament transformer is connected between the gate and one of the main terminals of a triac. The secondary is connected to the remote switch through ordinary low-voltage line. With switch open, transformer blocks gate current, prevents the...
Infrared Remote Controller
The transmitter is built around two CMOS 555 timer ICs (TLC 555s). The transmitter generates a modulated 35-kHz
Ir Remote Extender
This circuit can be used to operate a VCR or CD player from another room. It"s really an infrared signal repeater. The s
This 1-cable system carries composite video (NTSC, PAL, or SECAM), power, and channelselect signals. The interfa
Remote-Control Analyzer Circuit
A schematic diagram for the remote analyzer is shown. The circuit is powered from a simple 5-V supply, consisting of PL1, SI, Tl, a bridge rectifier (comprised of D1 through D4), capacitor CI, and a common 5-V regulator, Ul. Switch SI is the on/off control and is optional. The power-supply transformer used in the prototype is a 12.6-Vac unit,...
Remote-Control Transmitter Circuit
This transmitter sends an FM signal in the 88-to 108-MHz range, with a tone of 19 kHz. This can be used to activate the FM MPX pilot carrier indicator, which can be interfaced to external devices. L4 is for use with a 15 CM wire antenna. LI is 9 turns of #26 enamelled wire on a 54-W 10-kQ resistor (carbon type), L2 is 2 turns wound over LI.
Interfaces For The Remote-Control Transmitter Circuit
Shown here arc several possible interface circuits that can be used with the remote-control transmitter. The one in A illustrates a typical FM stereo MUX decoder with a load connected directly to the open-collector output of a TA7343 PLL. The circuit in illustrates an optoisolator- coupler output driving a 12-V relay coil via a general-purpose...
Microcontroller Based Telephone Remote Control Circuit
This device allows you to control remotely any (with suitable add-on expansion boards, up to eight) device, such as lights, water heaters (boiler), air-condition, plant watering, alarms, etc via a relay. By using it you can for example water the garden at your country house from the convenience of your living-room, or you may turn on the water...
A simple and effective receiver for actuating garage doors, alarms, warning systems, etc. The SCR, which has a very low trigger current 30 Âµ is typicalâ€”it requires an input power of only 30 juW to activate the relay. A high Q tuned antenna circuit assures rejection of spurious signals. A whip or wire antenna is adequate up to 100 feet from a...
Radio remote control circuit
The receiver circuit shown in FIG. Insert the plug XP radio headphone jack xs, when the radio receiver to the hair after the transmitter signal, the audio
Silicon photocell remote control circuit
220V AC voltage through the transformer T transformer is 19V, after full-wave bridge rectifier, filter capacitor c], terminal regulator blocks 7812 after regulators into DC vol
Lamp remote control circuit
220V AC voltage through a capacitor C] buck, rectifier bridge pile UR were barrier-wave rectifier, filter capacitor Cz, after the Zener diode voltage into DC voltage. Photoresi
Coal stove door automatic door remote control circuit
Cook in advance to open the door with a coal stove, before using the fire to be strong. Here's an automatic door opening device,
Homemade TV remote control off electrical power supply circuit
When the infrared receiver tube PH302 receives a signal from the remote control, the CX20106A selected frequency amplifier output
6m wireless remote control switch circuit
This example describes a wireless remote control switch, with reliable operation, simple and practical features, can remote
Magneto Remote control switch circuit diagram
Features automatic weapons such magnetic switch circuit is very simple, reliable, low failure rate, good versatility, can be used to output the performance or can be converted into mechanical displacement of the occasion. (2) is a circuit diagram using the Hall switch (SH) magnetron devices. When the magnet away from the Hall switch circuit, due...
Multi-point circuit diagram of a remote control switch
As shown, the switching circuit comprises a buck rectifier circuit, the bistable trigger circuit and the thyristor control circuit. Implement remote control for electrical equipment turned on or off.
Voice remote control switch circuit
Voice circuits described in this section, during the day or in brighter, voice-activated switch is turned off, the lamp does not light. At night or in low light, sound control switch is pre-working state.
Simply by remote control law circuit diagram
The receiver provides two TV signal, a TV in the living room, another TV in the bedroom, along with a satellite receiver. Watching television in the bedroom for Taiwan convenient, but when watching television in the living room,
Remote control transmitter circuit
Specific remote control transmitter circuit composition shown in a diagram. Transmitter mainly by the large scale integrated circuit chip Dl (THBT- T01), 4s5kHz crystal oscillator, 32kHz crystal oscillator, a liquid crystal display (LCD), room temperature thermal
Dual AC radio remote control switch circuit diagram
As shown in FIG AC is a dual radio remote control switch circuit. Transmitter: Q3 generates a high frequency carrier signal. Q1, Q2 composition oscillator circuit. When you pre
Homemade wireless remote control circuit diagram
As shown in FIG homemade wireless remote control circuit diagram; A motor remote road works Wireless remote control transmitter circuit As shown for the remote control transmit
Travel schematic model remote control
As shown in FIG travel remote control model is a circuit diagram, NE556 is a dual time base IC 555 includes two separate circuits, each consisting of a Schmitt trigger circuit
Radio remote control lighting switch CD4017 RCM1 schematic
As shown in the radio remote lighting switch with RCM1 type radio-controlled remote control transmitter and receiver components as a circuit. Circuit from RCM1A/B component for
Stepper Motor Circuits
Direction Finder Circuits
Power Control Circuits
Motor Control Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity