New Circuits Page 257
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Constantly changing light and sound analog controller circuit 01 ..
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Constantly changing light and sound analog controller circuit 07 ..
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Digital integrated circuit is composed of ten road flashing lights string controller that drives El- El0 ten road string lights flashing cycle. The same, A2 is the - mf sequenc..
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Figure 2 foot emitting a flashing light switch circuit indication. when s is closed, normal light E lights flashing hair light indicates power loss of power does not work shoes..
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Contact resistance measuring circuit shown in FIG. It mainly consists of a constant current circuit and amplifying circuit. Operational amplifier 1C1 and form a transistor VT a..
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Constituting simple LM3915 audio power meter circuit diagram Note: If the internal resistance of 4 speaker when, Rx take 10k If the internal resistance 8 speaker when, Rx take ..
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Explanation: This is a simple and low-cost broad-band high-frequency electric field strength meters. Field strength of the radio signal into a DC measurement, it is measured. R..
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Dual drive ICs 10LED level meter circuit Dual-drive IC is shown in the IO LED level meter circuit, the figure of two TLM8101 driver IC can also be used instead. ..
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Detecting electrical equipment, sometimes in order to more accurately measure the electrical current, the need to disconnect the circuit in series into the ammeter measurements..
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Direct measurement of soil content measurement circuit different areas of soil moisture, salinity, nitrogen, pH, etc., for soil improvement, various types of agricultural crops..
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Figure 1.88 using the loudness of several tapped the potentiometer control circuit. In FIG. (A), and between the tap and the input of the potentiometer and the land respectivel..
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DC voltage present on the telephone line is usually about 45 to 50V, on-hook and off-hook to 6V. The step-down circuit relay is activated. Relay control tape recorder. Audio is..
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Diodes VD8 ~ VDI1, SCR vs composition control switch main circuit isolation diode VD7, stable orbital tube VD6, simple resistor capacitor C4 constitute buck regulator circuit, ..
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Enhancement circuit as shown in the high-frequency component of the video signal can be increased, thereby enhancing the contrast of the TV image, it can also be connected to t..
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FIG. 1 is a circuit diagram of it, it is in the audio circuit from the resistance between the two leads to a probe to rain alarm. Fig. 2 with CCL to make a probe connected to t..
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Explanation Here is a simple fire alarm circuit based on an LDR fire detection sensor. Smoke generated during circuit generates an audible alarm, fire smoke in case of fire. Al..
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Door alarm here with a time recognition, the owner opened the door is normally open the door, open the door to complete the action within the general 30s, so it does not alarm,..
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Ding for the circuit principle: care, vs SCR trigger grounded, it is in the off state. When someone leads A burglar broke, the SCR trigger end to give a trigger voltage is turn..
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Conventional digital home theater amplifier requires the use of a dedicated integrated circuit, and such a small integrated circuit manufacturers, the price is higher. This cir..
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Digital precision pressure tester circuit shown in Fig. MAX1457 external ROM selection 93C66 type 4096b E2PROM. After power MCS end is pulled to a high level, check the main ch..
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Digital pressure measuring circuit AD7710/7715/7730 multifunction digital sensor signal conditioning ICs. They integrate a digital interface with the control port, a clock gene..
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Digital pulse width measurement circuit is shown. It uses a l00kHz reference frequency, the count in the pulse width of the signal, the count value of the product of the resolu..
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Digital integrated circuit enables the answer is greatly simplified. The picture shows four Responder group circuit. ..
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Dien stone crystal oscillation circuit CM OS inverting clamor ways to ensure work as accurate because it uses a BCD counter Wong (IC2, hi) so maximum oscillation frequency equa..
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Figure 4-14 is a digital integrated circuit consisting of 16 preset potentiometers Siniperca electronic circuits. It consists of three parts: input into the controller. Presett..
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Figure 4-18 by volume potentiometer T (Xi 153AP and tone potentiometer T ( 155AP consisting of volume, tone control circuit circuit, Rx, cx clock oscillation element, the value..
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Crystal frequency stabilization of frequency modulation circuit is shown below: ..
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Crossing various sawtooth voltage generator, the common denominator is the use of a capacitor charge. Discharge effect to generate a sawtooth voltage of the forward and inverse..
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Fig variable frequency oscillator transistor circuit, which is mainly an oscillator, the crystal resonator and varactor circuit by the transistor diode, the output of the ampli..
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Field scanning circuit circuit and sawtooth waveforms Sawtooth signal generating circuit color television field scan is an indispensable circuit shown in Figure 1 is a Toshiba ..
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Field effect transistor amplifier has fixed bias input source with feedback. Therefore, the input impedance is very high and very low capacitance. Drive a field effect transist..
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Feedback oscillator circuit inductance shown, transistor 3DG3. Component Parameters Reference values are as follows: 1) transistors 3DG6. 2) Resistance: Rhl 91kfl, RBZ llkfl, R..
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Cost-effective nickel-cadmium battery charger LM393 constructed as shown, it has the following characteristics: (1) constant current charging interspersed with large current di..
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Fast and efficient charging is higher than conventional charging ten times to several times the current charge. When the battery voltage rises to a predetermined value when (va..
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Fast charging circuit (TEA1102) Shown is a chemical for a variety of battery fast charging circuit, which is based on fast charge controller TEA1102 nuclear charging circuit of..
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Fast charging circuit It shows voltage and current waveforms and fast charge circuit configuration of the charger. Detection and control circuit of the circuit is composed of t..
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Efficient nickel-cadmium battery charger IC (LTC1148) circuit ..
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Days to TN-1 Intelligent negative pulse charging circuit Is a day to TN-I intelligent negative pulse charging circuit. This charger is the main part of the typical half-bridge ..
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Electric cars represent the voice circuit principle, when to speak, against sound signal received by a drop in the body into a microphone BM and telecommunications weak number,..
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EXT connected AC magneto produced. Rectified by D1 stored in C1, and rectified by D4, R9, C7, C8 filtering, power supply to the integrated circuit IC, the D3 then turn off the ..
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DAC0832 is a memory device having two input engrave a D/A converter chip, can be connected directly to the computer bus. Its main properties are as follows: 8-bit resolution; s..
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DAC0832 shown in Figure 27-13 cushion in the form of a single-phase circuit connected with 8086CPU. Since DAC0832 internal 8-bit data input must be set between the CPU and D/A ..
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Face through attendance as the worlds first embedded facial recognition machine, the error rate is less than one hundred thousandth of the rejection rate of less than one perce..
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FM24C256 as shown 27-54 slave interface circuit I2C bus, the address format shown in Table 27-3. A2, Al, AO is set to low (when extended storage capacity, the need to change A2..
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Corridor counter delay circuit for controlling lights This circuit is tested and functionable. When the circuit is energized, the 555 oscillator starts to oscillate, CC40161 is..
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Electronic calculator with automatic counting of the interface circuit shown in Figure. Figure (a) stroke switch so via optocoupler B control; Fig. (B) the use of reed KR and p..
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Digital counter circuit as shown is composed of infrared signal for detection of moving target scan count small device, it is suitable for the production line, to move items on..
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Electronic ignition circuit for the water heater is shown. When you open the faucet, switch K 3V battery, since the charging C2 need room, so VT6 is off, the power supply while..
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Electric water heater temperature control circuit, with water level indication, temperature and anti-dry, leakage power automatic protection function, safe and reliable. (1) Th..
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Darlington phototransistor type light-triggered switching circuit application As a result of the sub-type Darlington phototransistor and the op amp, so very faint light can fli..
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Darlington phototransistor type light-sensitive switch control circuit application As a result of Darlington type phototransistor do sensitive element, the low light sensitive ..
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DC power supply is a helium-neon laser excitation power supply currently used the most common form of power, there is shown a laser printer used in the road, Tl as power transf..
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FIG 220V AC by the step-down transformer T, VD3 ~ VD6 bridge rectifier and a three-terminal voltage regulator blocks A2, stable 12V DC voltage output for digital integrated cir..
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Construction LED circuit shown in Figure. It requires manual power, after the circuit is powered, the light will blink to remind people to pay attention to safety. ..
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Explanation The circuit is nothing more than two light emitting diodes (D1 and D2), its position is controlled by the temperature of the surrounding environment. Here the tempe..
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Driving series white LED, flowing through the same song in each white LED current, it is possible to obtain a uniform brightness. The disadvantage of the tandem drive is the dr..
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Drive the light emitting diode is shown in the digital display circuit, the count signal to ICM7217 feet in the chip by the count and after the coding process to drive the digi..
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Configure National Semiconductors DS8877 drive circuit as shown, when the 6 digit calculator and digital current conjunction, the current range is 5 to 50mA. Drive does not req..
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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..
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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 ..
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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..
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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..
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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..
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FIG potentiometer RP2 sliding contact with the axle shaft is directly connected to the antenna. Only when given potentiometer RP1 and RP2 refers in the same position, only non-..
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F9500 is the power supply in the United amplifier circuit preamplifier. The power supply using LM7824 and LM7924 composition 42V servo regulator power supply, Huang NE5532 op a..
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DTL integrated circuit constituted by a crystal oscillator a DTL is shown by the crystal oscillator integrated circuits, and the oscillation frequency is 100 kHz and 1 MHz. It ..
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Crystal oscillator and frequency divider (74LS04) circuit diagram: ..
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Crystal oscillator circuit consists of several gates as the d Several gates as shown by a crystal oscillator circuit. FIG. (A) to l MHz crystal oscillator circuit, the figure (..
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Crystal oscillator integrated circuits, namely two 10 MHz and 20 MHz oscillation frequency diagram of the oscillator circuit. ..
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E crystal oscillator circuit composed of several gates Several gates as shown by a crystal oscillator circuit. FIG. (A) to l MHz crystal oscillator circuit, the figure (b) is 2..
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Doubling rectifier circuit in negative ion generator application circuit ..
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D/A conversion circuit by the DAC0832 and op amplifier LM358, etc., there are two bad-out channel, unipolar voltage output. Digital output range: OO-H FFH, corresponding to an ..
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Digital Camera 5 channel power supply MAX1565 5 shows a digital camera power supply channel MAX1565, seen from the figure, the chip offers a number of road width signal generat..
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Controllable gain amplifier is an automatic gain control circuit of the execution unit, the main method of controlling the gain of the amplifier in two ways: One way is through..
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DW15-200-630A breaker solenoid DC solenoid structure, short-time working. (1) DK-1 control box using AC power switch on the electromagnet circuit circuit is shown in Figure 6-7..
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Controlled pulse signal generating circuit FIG controllable pulse signal generating circuit, when the input terminal O start (start) pulse signal (input high), electric road be..
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DC motor-generator speed closed loop control utilizing UC3637 internal error differential amplifier EA, after tachometer generator speed voltage signal is filtered with the spe..
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Denote cam controller SA 1 contact closure case. M1 is 1. 35kW driving motor, Mz to 4kW pump motor. ..
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Factories and enterprises lOkV and below the circuit breaker commonly used CD10 (formerly CD2) type electromagnetic actuator. This type of mechanism itself has a mechanical ant..
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FIG load test is a control circuit. This external load circuit up to 10A, widely used in the drive test power, the power amplifier, LED solenoids and relays, and the carrying c..
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FIG SD501E is J tie fan IC, which has the following characteristics a 7 5 ±progressive Timing: round strong, medium. Weak block touch speed; normal, natural wind and sleep wind..
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FGDF-3 three-phase low-temperature iron plating power commutation control switch and electronic circuit KGDF-3 low-temperature iron plating power supply device having a single-..
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Extended delta decompression starter, that is, when the motor starts its three -phase winding set to take part, eatY coupling, connected to another part of links, the entire ex..
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Electric driving is an important equipment for the modernization of the plant material transport, the traditional control methods, mostly semi-manually operated automatic contr..
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Dynamic noise reduction circuit and a DC volume, tone balance control circuit, which is applied to the input stage and the discharge line between the amplifier. See DC volume c..
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Each motor with independent drive, but only one frequency for a given device, which uses the same RP potentiometer to achieve a multiple motors in parallel. ..
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Electronic Table (1) Introduction This schematic circuit having two alarm output by the timer by thyristor controlled. Can any on/off, and shut down after the power supply from..
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Digital controller password as shown by the nine-digit password, and a total of 11 keys, including four pseudo-code keys, 7 keys have two valid keys for the overlay keys, the n..
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Disinfection cabinet circuit principle is the use of infrared heating, in a closed cabinet to create a high-temperature environment, tableware disinfection. Circuit shown in FI..
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Figure 1-87 is a good loudness volume control circuit, it uses an ordinary potentiometer, used element pieces are scarce, but the effect is quite remarkable. The electric road ..
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Figure 1-89 is an example of loudness control circuit. Potentiometer from the ground 30% of the total resistance at the tap. When the slide arm when screwed to the tap position..
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Figure 3173 is a mechanical braking, dynamic braking, reverse braking function wound rotor induction motor speed can be positive and negative control circuit. Figure, KI, to st..
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Desheng 1012 12-band FM, MW, SW, TV sound radio circuit diagram as follows: ..
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EPSON PHOTO 830U printer power circuit It shows EPSON PHOT0 830U printer power supply circuit, which belongs to the switching power supply. In normal operation, the power suppl..
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Digital signal processing circuit when work needs to cooperate with it with a memory for temporarily storing image data. DPTVT-3D/MV digital processing chip need four KM416S102..
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Discharge After the memory circuit After the memory circuit is also an instantaneous action, the delay reset circuit. When the input signal to a movement that is open when the ..
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Discharge before memory circuit Before the memory circuit is considered instantaneous action, the delay reset circuit. When the input signal to one that is action, and start ti..
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DC power supply can also be controlled via an optical fiber. The circuit is a small DC motor ( 1/12hp) providing an insulating speed control channel. The control logic is an in..
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Fans (Ceiling) Fifth gear speed control circuit shown in Figure 3-6. It uses capacitor step-down, three-terminal fixed 7806 integrated steady voltage regulator Ai regulator to ..
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FIG sensitive ((InW) .OPA111 optical receiver amplifier feedback resistor of FIG 200Mn, because the gain of the amplifier is high .OPAI11 receiving signals transmitted over an ..