New Circuits Page 3
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When the input voltage is 170-260V AC range, the output AC voltage 187-231V range. Transformer ratio is k = 24/220 = 0.11...
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When the input is disconnected, the transistor VTi conduction, VTz cutoff relay KA released. When the input is shorted. VTi deadline, VTz conduction, KA pull...
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Operating power protection devices, there is a DC power supply operating power and AC operation into two categories. ..
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Shown for the brightness control relay circuit. Resistors R1, R2 and R3 form a light-sensitive resistor voltage divider circuit,..
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The so-called charge amplifier means for amplifying the signal charge from the piezoelectric device amplifying circuit . Such high internal impedance ..
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Figure C1, C2 is 22pF capacitor connected to 32 MHz .png">crystal oscillator circuit , the use of quartz crystal..
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50 impedance as shown in Figure grounds RF2320 linear amplifier circuit configured, input, output, using the transmission line and inductive or capacitive constitute matching n..
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4V flat monitor high voltage power supply circuit diagram innocentA wide range of 7 ~ 40V turn 5VDC-DC step-down circuit diagramLight control switch circuit diagram of a safety..
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4013 pairs of D-type flip-flop in the astable multivibrator is used as a binary divider output, will produce the output frequency of the multivibrator frequency symmetrical hal..
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4 Application examples of applications are given in the figure, it is a Winchester disk drives three-phase brushless DC motor, the operating speed is 3600r/min. Although the or..
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3F155 circuit shown in FIG. It uses manual control mode. The figure, a self-excitation braking phase, the other two phases using short brake. Resistor R, the voltage across cap..
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33kW and above windlass with Y- conversion power-saving circuit ..
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322 monostable multivibrator is cross-connected, when run under non-steady state condition between the oscillator Unicom, it will produce a continuous timing cycle, the same as..
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32.768kHz ; In MP3/MP4, mobile phones, laptops and other digital products are provided real-time clock signal generating circuit, which is shown in FIG example, and is mainly c..
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3133 circuit shown in FIG. Figure 3-133 (a), dynamic braking (b), (c) the three lines by manually (button) control. Wherein FIG. (A), (b) the dynamic braking DC power supply wi..
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300B is a high reliability, excellent characteristics of the power amplifier transistor 6 in the circuit should be designed so that the 300B excellent characteristics of the fu..
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The pre-regulator circuit connected to the capacitor, resistor element. Regulator in its conducting direction through the input ..
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LA5522 Application Circuit It works briefly as follows: When the supply voltage vcc motor mechanical or negative change when the load changes,..
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The circuit designed for teaching demonstration or experiment with it to hear the signal voltage electrocardiogram. ECG signal voltage is..
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22kW and below hoist with power-saving circuit Y- conversion circuit shown in Fig. The circuit on the basis of general hoist circuit adds a CJ20-10A exchange contact contactor ..
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Typical application circuits Zheng brick SRS5250S constitute processing shown in FIG. 9-41. SRS5250S pin diagram SRS5250S processing circuit may..
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IF pre-amplifier circuit shown in distributed-parameter type microstrip circuit. It operates in the frequency band 950-1 470 MFk,..
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220V electric vibrator is inserted clip, FU is the fuse. ST is inveterate like device, HLl HL2 are insulation and heating instructions. - Light, EH heater. When boiling, the po..
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10 minutes to 2 hours: 100 lines bell - 20 Ogawa, when selected by the multi-gear stick lemma Ge S2 41f system. IC} is self-excited multivibrator. 1C, the ..
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Circuit bias circuit automatic stabilizers quiescent operating point, good thermal stability. Three-pole tube with NPN type (Iceo small)...
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In the second equalization circuit connection method, and it works as shown in Figure 1-96. When the potentiometer wiper is moved lc inverting..
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Shows the use of the MP3 player memory chip ACU7505 clamor circuit, in order to meet total machine CPU and MP3 decoder core..
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20W power amplifier circuit shown in Figure 8-3. It consists of a pre-release level, and promote the level of three parts p power level in order to reduce the large phase shift..
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20W bus radio and megaphone circuit TDA2005S double low frequency power amplifier integrated circuit design, the front end can be connected to the microphone input or low-frequ..
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1The circuit shown in Figure 3-145. The line uses a rectifier diode rectifier brake for neutral grounding of the three-phase four-wire power supply system. ..
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Circuit works: SC3525A for the US General Semiconductor PWM silicon chip, 1 foot of the error amplifier inverting input terminal,..
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Pre-amplifiers using current feedback circuit tandem type, its output impedance is approximately DC collector resistance Rc ,, surface..
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Transmitter (FZ) winding and a receiver (sz) correspond to the three-phase windings connected, 110V AC voltage supplied to the transmission..
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It consists of single-junction transistor VTi, resistance Ri, potentiometer RP, capacitor C consisting of relaxation oscillator and amplifier transistor VTz...
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1930 ~ 1990MHz as shown in Fig narrowband linear amplifier circuit configured by RF2320. Radio frequency (RF) signal input from 6 feet, after amplified by an amplifier 14 feet ..
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Recording signal amplifying transistor circuit Shows the recording signal transistor amplifier, the microphone signal..
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Typically, 9602 multivibrator circuit can trigger the rising edge or falling edge of the square wave, but not both at the same time can trigger the use ..
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Variable gain amplifier Shown is a variable gain amplifier. For fixing the input signal, the output signal amplitude of the controllable amplifier circuit...
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Start within 16W2D single ended energy saving lamp dedicated electronic ballast circuit shown in Figure, RFI filter circuit consists of 1-60 wave,..
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Circuit core device is a dimmer SM7232 specific integrated circuits, which leads to the foot of the eight functions are as follows: 1 pin VDD, the..
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AC solenoid driven control with SSR principle is shown in Fig. The switch is closed SW1,220V AC transformer through the transformer T to AC 30V, the QL crossing barrier..
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When the supply voltage drops below 10. 2V, the yellow light emitting diode VLi light, suggesting that storage pool can not continue to discharge...
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As shown for the basic application circuit thermistor. Figure (a) of the basic temperature measurement circuit. The circuit temperature measurement accuracy ..
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Look for the blanket internal disconnection circuit, its working principle is: M spot welding have a wire about 2cm induction body, when a sense of..
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Cycling is our common means of transport, if accompanied by a bicycle speedometer, you will be able to master cycling speed, especially for cyclists , the usual training, a..
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uPC1237 by a single power supply, operating voltage range of 25v ~ 60v, usually the direct use of the amplifier as a positive power source + Vcc power...
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Tuner universal optocoupler should be on the electrocardiograph use, it is a typical circuit is shown in Figure 5-29. Circle O,..
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BA313 is a built-in automatic level .png">control circuit (ALC) of audio recording preamplifier circuit, commonly used in the cassette..
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1/0 defined PLC Table. Its input signal path 13, including: 1 motor starter button. 2, 3, 5, 7, 8, 9 station photoelectric switch normally open contact, move the CD machine 37 ..
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When connected to popular Stax Class 1 electrostatic headphones, the design shown in the figures may be on the full audio bandwidth ..
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1237H-circuit principle shown in Figure 2-122. Its interior has four separate detectors can finish respectively to their inspection tasks. When the circuit is abnormal, it can ..
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The introduction for unidirectional thyristor trigger circuit is equally applicable to the TRIAC. Here are some also ..
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1071 touch is the use of audio enhancement technology being introduced high-resolution two-channel stereo enhancement processing chip production improvement product, it is desi..
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Examples OFDM modulation system. Seen from the graph, the input data signal (... --- Ol01100), the data signal by the string,..
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As shown in the circuit diagram of a high-impedance distribution. It is with low resistivity distribution of..
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As shown by the table to check the ability to trigger the thyristor circuit diagram:..
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It shows the use of various forms of pulse signal generating circuit operational amplifier...
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It uses SHD series of electronic control equipment electronic modules. Fan control box KZH as HKD 1F electronic module...
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rDA2030A TDA2030 is improved product that the original maximum working voltage up to 18V 2ZV, the maximum output power up to 18W. Harmonic distortion is also greatly reduced. Its application circuit is shown..
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By the regulator and the regulator circuit silicon resistor formed Simple voltage regulator circuit is mainly..
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Circuit works: When you clapping sound through the piezoelectric ceramic HTD people seized converted into an electrical..
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It is a measurement circuit, when the force is 0 ~ 1500g time. U. Output O ~ 1500nN (sensitivity ImV / g)...
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Having two sets of PWM signal generating circuit within NCP5201 chip, a set of output pins and the ..
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Flip-flop circuit having a memory function pulse signal. It has two stable states: the transistor VTi deadline, VTZ conduction;..
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It illustrates a simple boost circuit, which is supplied by an oscillating signal generated NE555 via VT transistor to drive booster transformer , a step-up transformer to increase the oscillation signal is then rectified DC high voltage can be obtained...
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Rechargeable ago memory circuit Before the memory circuit is considered instantaneous action, the delay reset circuit...
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Circuit shown (A): R], R2 is 15 ~ 18kn, Cl, C2 is 0.01 ~ 10 "F. Figure (b): oscillation frequency, up to 2 ~ 5MHz, RP is adjusted by potentiometer FIG. (C) access. diodes, transistors can be prevented by two simultaneous saturation stop vibration...
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SH Hall opened with a double silicon output interface circuit..
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It shows the oscillator circuit optocoupler controlled by photoelectric coupling drive transistor...
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Small (2 to 3 meters) of neon electronic transformer circuit diagram as follows:..
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Gate F4, F5, F6 together form a low frequency oscillator, driving high brightness light-emitting diode flashes,..
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ptPC1891A application circuit, where in SA is working state switch, a total of four to choose from, it is mainly through the..
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When charging, the green light-emitting diode VLi; the battery is sufficient, red light-emitting diode tube VLz bright...
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Circuit R1 R2 + RP + size branch resistance value determines the magnitude of the current I, the current should be..
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3P10 circuit shown in FIG. It uses a bidirectional thyristor control. Adjustment potentiometer RPi, can change the minimum motor speed f adjustment RP2, continuously changing t..
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3-119 circuit shown in FIG. By combining switch SA, realize stator windings, 2, Y and 2Y connection corresponding to the motor speed n1..
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28 is 45V/8A brushless DC motor driving circuit diagram. It is an open voltage-controlled, adjustable by one pin external potentiometer adjustment of the PWM duty cycle, the av..
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The excitation device for light duty synchronous motor 625kW initiated. Triggering the device circuit consists of three ..
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Circuit shown in Figure 3-151. Figure 3-151 (a) of the capacitor banks connected into shape,..
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FIG, T is the excitation transformer, R, varistor, rectifier diodes to protect against VDii ~ VD16 breakdown; Rz, C2 resistive capacitor protection..
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R "h sampling circuit limit order _" to reduce the sampling resistor. Plus DC voltage level can be placed between the..
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Circuit shown in Figure 3-69. It applies to require frequent timing control motor reversing operation of the occasion. Drawing, thyristor Vl,..
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In some places, allowing only a specific direction by the motor running, even when the power supply phase sequence..
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Circuit works: When normal inspection work where the voltage across the resistor R2 through, RP, partial pressure, as the input signal of IC4. IC4, R3 ~ Rg,..
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The thyristor control circuit, with the bridge circuit to control the temperature in the contactor coil KM plus a secondary winding wound as..
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Semiconductor thermistor embedded thermal protection element belongs, it is sensitive to temperature,..
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When no light, photocell PC1, PC2 was high resistance, Q1, Q2 is turned off the relay contacts K1, K2 relay..
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Capacitor start single-phase induction motor circuit configuration, in order to form a two-phase rotating magnetic field, starting winding and capacitor in series, the same magnetic field can be formed automatically...
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Motor switch control circuit shown in Figure offers two speeds counter-steering i.e. two speeds in the opposite direction...
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Shown in forward and reverse dual interlock control circuit, on the basis of the..
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4X4 matrix keyboard system settings, including 0 ~ 9 numeric keys. A ~ F as function keys. The main function of the keyboard is complete parameter settings, display mode select..
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As shown for the brightness display circuit. The circuit consists of light-sensitive sensor, an oscillation circuit, LED display circuit. Wherein the light-sensitive..
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It shows using ICL7106 / ICL7107 chip liquid crystal display circuit. In this circuit, ICL7106 / 7107 is a signal measurement and A / D converter circuit, an analog input signal by detecting it, amplified to the digital display circuit, the result of the....
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Provided only manual recording level control function, when the circuit is in the recording mode, the recording level as LM3915N was shown...
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It shows the dynamic AC signal level display drive circuit can be used for audio level display driver...
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Light-emitting diodes can be used DC, AC and pulse and other drivers, resistance typical buck LED display circuit as shown in Figure 13-1...
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300B tube single-ended Class A amplifier circuit is as follows: ..
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2W resistors can be used around a metal or carbon film resistors fortunate optional paper referred capacitors, polypropylene capacitors, voltage of 400V on the nozzle; capacito..
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Preamplifier VE1 the machine with low muscle low R double triode 6N6 (left and right audio channels each with its half). Working state design in the CPI. Promote ..
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1000 m single-tube FM transmitter circuit diagram of oscillation: ..