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8051 / 8052
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H Bridge Circuit
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4 Band Resistor
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Video Mixer Circuits
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TV Video Circuits
Video Modulator Circuits
Photo Flash Circuits
Video Amplifier Circuits
Enlarger Exposure Meter Circuit
Two gates of a 4011 arc used as a comparator. When the resistance of R4 decreases the voltage at pin 1 and 2 increases, producing a logic zero at pin 3, causing pin 4 to go high and activating the LED. R3 is calibrated in light units, or seconds exposure time. To calibrate, set pot R3 so as to just be on the LED ON/OFF threshold. With a light...
Ultrasonic Cleaner Circuit
Ail ultrasonic cleaner is useful to clean certain items. This circuit uses a microcontroller to control timing and give a digital readout, but only the basic oscillator can be used, if desired. RESL, RES2 are piezoelectric transducers driven by power oscillator Ql. Ql is powered by a bridge rectifier-capacitor input filler that operates...
Atv Video Sampler Circuit Circuit
This unit picks up your ATV signal by sampling the transmission line with negligible insertion loss. It uses 2 N connectors for input and output connections. A BNC connector is used on the video output. The detected output is connected to your monitor and scope so that you can accurately adjust your transmitter for proper video and synch...
Universal Video Interface Circuit
This combination sync stripper and universal video interface can solve a lot of problems for you, including Super-Nintcndo-to-anything interfacing, video overlay and scope TV frame locking. Kits, fully tested units, and custom cable assemblies are available tlirough Redmond Cable.
Video Master Circuit
The video master consists of a series of converters that place all your video sources on unused UHF channels, which then combines them with normal TV channels (terrestrial or cable into one cable). That one cable can then feed several TV sets for whole-house coverage. The desired video source is selected with the TV set`s tuner.
Video amplifier and video detector
The circuit has a typical voltage gain of 84 dB and a typical AGC range of 80 dB. It gives very small changes in bandpass shape, usually less than 1 dB tilt for 60 dB compression. There are no shielded sections. The detector uses a single tuned circuit (L3 and CIO)
Electronic flash trigger
A negative pulse at the input is fed via capacitor Cl to the input pin (2) of the IC, Pin 2 is held slightly above its triggering voltage of 1/3 Vcc by the voltage divider comprising Rl, R2 and RV1, The negative pulse triggers the IC and the output (pin 3) goes high for a time period controlled by RV2, R3 and C2. When the output goes low again...
TV signal amplifier 470Mhz-860Mhz
This amplifier can amplify to 10dB the RF signal from antenna working as class A and is based on transistor BFQ34 of Philips. The transistor comes in case SOT122A. You may find the BFQ34T in market but better do not use it as it has different characteristics.
Stereo tv decoder
The composite input signal is preamplified by transistor Ql and is then coupled to the high-pass filter composed of C3, C4, R6, and R7. The filtered audio is then passed to IC1, an MC1310P "Coilless Stereo Demodulator." That IC is normally used to demodulate broadcast-band FM signals, but by changing the frequency of its on-board VCO (Voltage...
This simple diode modulator delivers excellent results when used for high percentage modulation at low signal levels. Constants are shown for a carrier frequency of about 10 MHz, but, with a suitable tank, the circuit will give good results at any frequency at which the diode approximates a good switch. To extend frequency above that for which...
Video modulator circuit
These are modulator circuits for modulation of video signals on a VHF/UHF carrier. The circuits require a 5 V power supply and few external components for the negative modulation mode. For positive modulation an external clamp circuit is required.
Phone camera flash control circuit
200mA peak current letter phone photo camera flash circuit, using a AAT3110-4.5 electrical capacitive charge pump chip, the phone lithium battery voltage boost and regulated to
Multiplication circuit in broadband video band used
Although the respective inputs are differential inputs, but the right amplifier is greater than the general OP bias current (800nA), so as the input coupling capacitor, confide
Video by MAX4102 4103 RF distribution amplifier circuit diagram
As shown by FIG MAX4102/4103 Video configuration/RF distribution amplifier. Signal input MAX4102/4103, after amplification the output. To make the transfer process reflection m
IF processing - video detector circuit
As shown by IF processing circuit (MC1350) and video detector MC1330AP combined video circuits. Is modulated depending on the image signal IF carrier frequency (45 MHz) is supp
Off TV with reed elimination circuit diagram highlights
As shown by a reed switch off the TV highlights cancellation circuit. Brightness potentiometer W ground a series reed, normally watch TV, the reed contact is closed, the capaci
TV signal amplifying circuit diagram conversion
As shown in FIG amplification is used to convert a variety of devices and TV video output signal, such as some VCRs, DVD players need weak output signal amplification occasions
Video cable driven by the MAX4104 4105 4304 4305 s an enlarged schematic
As shown in FIG grounds MAX4104/4105/4304/4305 video cable driver amplifier circuit configured. MAX4104/4105/4304/4305 as a coaxial transmission line suitable for amplifying vi
Having 50 input output impedance wideband video amplifier OPA676 circuit
As shown in Fig having a 50 input/output impedance of broadband video amplifier. In order to achieve a match signal transmission, reducing the reflected signal, often require i
H-bridge driver circuit composed by the Smart SIPMOS
BTS412B as two high-side power MOSFET switch and two BU271L (50v, Zhang 1n) for the low-side switch, can be composed of bi-directional H-bridge DC motor drive circuit shown in
Brush 6 channel camera power supply circuit MAX1566-1567
Brush 6 channel camera power supply circuit (MAX1566-1567) 6 shows a digital camera channel power supply circuit (MAX1566/1567), known by the ring, PWM generation circuit provi
CRT final video driver amplifier
CRT final video driver amplifier FIG complementary push-pull final video driver amplifier, which is composed of three transistors, VT511 as a driver amplifier, which uses a com
Camera power supply circuit
Camera power supply circuit Shows the camera power supply circuit, the normal power supply in order to make the camera work properly, the power supply circuit is composed of a
UPC1651 produced by small family video transmitter circuit diagram
Circuit Overview Now many families have a TV, VCD, video recorders, game consoles, cameras and even DVD and other household appliances. If the above-mentioned appliances out of
Photo interrupter circuit diagram
Circuit at rest (dark) state operation the electromagnet M current flows, once there is sufficient strength so that light shines on the phototransistor is turned on, that is th
Multipurpose tape recorders TV signal generator circuit
Circuit shown in Figure, IC1, C1 composition 400HZ about low frequency oscillator; IC2, C3 composed around 37MHZ frequency oscillator; low-frequency signal from the output C2 o
Limited TV channels to increase reception circuit
Circuit uses two features: one is the integrated electronic tuner with AV output (commonly known as the tuner) which can be received CATV full channel TV signal into a final vi
Simple video amplifier circuit diagram
Commonly used for camera or computer with B/W TV connection, the bandwidth of the amplifier gain of 3 and having 10MHz.
Video Line Selector
When measure video signal with oscilloscope, video line selector is very useful to find a scan line. The line selecter generates trigger pulse at selected line, oscilloscope will display only selected line. This is a very simple video line selector.
Video amplifier provides digital gain control
The amplifier in Figure 1 originally served as the photomultiplier preamplifier in a Doppler system intended for eventual operation in the Martian atmosphere. The design is based on a switchable array of six Maxim MAX4258 dual-channel video multiplexer-amplifiers, IC1 through IC6. Under control of a 4-bit input word, you can set the number of...
YUV(YCbCr) to RGB converter
Recently, most digital video equipments, such as video recorder, DVD player and TV game, have component video output. The component video signal is like RGB video signal, but it cannot connect to RGB monitor directly. Thus I designed and built YUV(YCrCb) to RGB converter to use old TV monitor or video equipment which does not have component...
16x16 Serial Digital Router (EB9533A)
The eight SDI input stages use the new GENLINX¾II GS9024 Equalizer IC. Input Return Loss of the PCB is optimized by using R-L circuits at each input. Each GS9024 performs high quality signal equalization over a wide range of data rates from as low as 30 Mb/s to well over 540 Mb/s. They allow the use of very long cable lengths that not only...
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...
Digital Signal Integrity
Interconnection and Timing of Digital Circuits
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