Top Circuits Page 63
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It can be used in refrigerators and other protection. It uses a 7815 three-terminal voltage regulator integrated fixed and Ai 555 IC Az (one-shot circuit for delay control). When the electricity is lower than 180V, the relay KA release, cut off the power ..
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MC1411 series of Darlington Drive current internal structure Darlington current drive has a small, consistent, and high reliability parameters, especially for high-voltage, high voltage peripheral driver stream, can directly drive relays, lights and other..
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As shown for the high-speed integrating circuit. The integration time constant circuit RtCt have a greater range. If you do not consider integrating capacitor Ct, A2 is a positive feedback compensation broadband AC amplifier. A2 negative feedback loop coupled..
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Shown for the 300kHz signal generator. It consists VT1, T1, VD4 composition VCO and associated components. VCO using LC tuned collector, VTl the oscillating tube, varactor diode VD4, T1 1-3 inductive winding capacitance C3 ~ C6 and variable tuning circuit..
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Shown for the human biological signals preamplifier circuit. In the medical equipment often need to measure the bodys biological signals such as ECG, EEG. Since biological signals are weak, it is very high amplification circuits. The circuit used with..
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The saying goes "dead ringworm surgical, medical dead asthma." This example describes an electronic anti-asthmatic, high voltage stimulation pulse it produces, to cough patients can play a role of adjuvant therapy. (1) circuit Zhichuan circuit by..
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Human reaction speed test circuit as shown in FIG. NAND gate D25, D26 and other components multivibrator output clock pulse period is about 50ms. IC1 composition 8 right register, D1 composed of boot delay circuit output signal as its serial input data. Just..
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The circuit mainly by new pyroelectric infrared sensor device TDH98072 special composition. The device is assembled with a control circuit having a circuit is simple, easy adjustment and high reliability. The device can also assemble other control circuits,..
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Here, SG3524 only as a pulse width modulator uses. The error amplifier is connected to a follower form. As shown in Figure 10-7. ACR output connector 2 PWM output pin as the control signal. V. VB and take parallel single-ended output. S, closed, shut off ..
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Shown for the power-saving voltage regulator circuit. The regulator Besides general delay regulator function, its main features are: (1) mains voltage 220V 10% within the safe voltage range, automatic voltage regulator from the power supply, the power can..
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The circuit can drive the companys Dialight 745-0005 monitor, which is a word composed of 64 alphanumeric display, generating 0 seconds and 1 second input lines A1-A6 on the phase response of the desired characters. 7 transverse matrix continuous scanning..
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The unique circuit design, technology and reasonable structure, all-discrete components, Class A FET output. As shown in Figure 2-31 below. Full circuit consists of an input stage, an output stage and power level to promote and Gm volume control circuit...
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Circuit shown in Figure 3-170. Wound rotor induction electric motive at different speeds induced in the rotor voltage (turn difference frequency EMF) U. A s U, o (Us0 is sl when the rotor open circuit voltage). The three-phase voltage through a bridge....
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As shown, the length of the transmission wire current loop circuit will introduce a radio frequency (RF) interference, RF energy can cause sensitive XT11l2 / 114 input errors, performance in an unstable loop current or input line current. If the RTD sensor..
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Forklift electric drive system consists of two DC series motors and control equipment. 4. 5kW electric motor driving through a mechanical transmission mechanism Mi, driving forklifts for forward and backward travel. 6.skW pump motor M2 machine after machine ..
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Figure 1-91 is added loudness volume control circuit practical circuit. It plugs into the preamp and tone control circuit of the room, behind the OCL and other can be connected to the main amplifier. Practical effect proved effective. In volume was very hour,..
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Is using a dimmer HT7700A ASIC production keyed stepless dimming lights, make use SB single button control, dimming the brightness has 96 changed. HT7700A scale using CMOS process is made using standard D1P-S-pin package. Preparation of the pin cylinder....
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4-wire resistive touch screen. ADS7846 interface circuit. ADS7846 analog chip contains electronic switches and successive approximation A / D converter. Switched by the analog switch chip, the X + (or Y +) positive supply termination ( ), x- (or Yr) grounded..
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(1) with the direct promotion of complementary high-power tube STK3048 STK 3048 the use of high voltage, wide dynamic, accurate differential input pair tube, with a common emitter terminal and the output terminals are collector constant current source..
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Peak voltage sample and hold circuit: peak voltage sample and hold circuit is shown in Figure 12-50. Peak voltage sample and hold circuit south chip sample and hold chip LF398 and a voltage comparator LM311 constitution. LF398 output and input voltages..
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The operation control circuit mainly by the button switch SB21. Contactor KM1 composed contactor KM1 main contact directly control the operation of the main motor Ml. Main motor Ml as the prime mover of the motor slip, the slip clutch can to drag the..
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6-lOkV bus segment at the circuit breaker should be installed, but when any of the following circumstances, can be equipped with isolating switch or load switch or isolating co..
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6V, 9V adjustable current power supply circuit shown in Figure 12-9, using fewer components, easy to assemble, the output voltage of 6V, 9V adjustable output l J current can re..
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7 feet for loudness compensation control terminal, the foot plus the DC control voltage can be composed of simple loudness compensation, was obtained additional high bass boost..
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750mW bridge-tied load audio amplifier circuit by the LM4065 amplifier with DC volume control IC composition is shown below. LM4865 8-pin SO package and an 8-pin mini SMD packa..
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78 Series integrated voltage regulator rated output current of 1.5A, For larger output current, the output current can be extended using the square method. Extended output curr..
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836MHz RF2347 low noise amplifier constituting a circuit diagram: ..
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875T and LM3876T same high performance 40W high power amplifier IC. It can 20Hz - 20kHz frequency range within continuous average power output load 8fl deleted, only 0,05% dist..
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90 color TDA4866 power amplifier for the vertical deflection system, vertical deflection frequency rate is 50 ~ 160Hz. CRMM circuit provides a high current drive input. Since t..
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A CMOS constituting the spot welding time adjustment circuit b The number of cycles it uses CMOS device composed of a control circuit, optionally in the range of 1 to 99 cycles..
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A XICOR X9241 POT IC module can be used to adjust the four digital analog circuits, as shown in the schematic. ..
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A chopper circuit shown in FIG. The circuit uses a high-performance op amp device MC33171 constitute trap. The device has a wide band and a high conversion rate. In the illustr..
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A circuit diagram of the control when the input line is high time, 4016CMOS analog switches will choose the timing of 1.5 megohm resistor Rt1, to produce a negative 100Hz to ou..
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A circuit diagram of the crystal startup reliability, power consumption is much lower than the crystal maximum allowed. Q1 is 2N918,2N3564,2N5770, BF180 or BF200. L1 frequency ..
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A combination of common-source grounded base amplifier formed by cascaded amplifier The source is grounded and common base amplifier combined into a cascaded amplifier. The gra..
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A common LED driver requirements are: The LED string voltage and the input voltage is very wide and overlapping. In fact, some designers prefer to use with a LED driver circuit..
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A common collector amplifier (1) common collector amplifying circuit structure and key components of common collector amplifier circuit as shown, the key components of the comp..
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A common emitter amplifier (1) Total pole amplification circuit structure and key emitting device common emitter amplifier circuit refers to the emitter (e) of the input signal..
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A common-emitter transistor amplifier, the opposite phase output signal of the input signal, also known as an inverting amplifier. As this electrical path for amplifying the pu..
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A constant current source of the differential amplifier circuit (2) having a constant current source of the differential amplifier with emitter resistor in differential amplifi..
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A differential amplifier having input impedance equal to the circuit diagram: ..
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A differential input differential output amplifying circuit diagram: ..
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A functional block diagram of the MC1428 Monoflop shown a functional block diagram of an integrated circuit MC14528. The IC features two monostable trigger road, more convenien..
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A high frequency signal is shown in the output amplifier, the circuit is constituted by a VI3 common collector amplifier (emitter follower), in order to improve the child-band ..
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A long time reading, writing, the distance between the eyes and the book too close, the light is too dark, etc. are the main cause of decreased vision. This example describes t..
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A pulse booster circuit When you need to increase the pulse amplitude, pulse boost circuit can be used, its structure, the figure (a) of the circuit can output pulse amplitude ..
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A resistor-capacitor circuit spark blowout. It is the coil magnetic energy is converted to electrical energy capacitance C, so as to eliminate fire took aim, eliminating the sp..
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A sensor SEN1 output DC voltage varies linearly according to the relative humidity. This DC voltage is supplied through R1 and R2 to the A/D converter chip U2. R4 to zero. LCD ..
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A single power amplifier circuit LM2876 crrL constituted. VTf external transistor to form the emitter type to provide neutral level (7 feet) for the LM2876, guaranteed lC relia..
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A single pulse signal generating circuit Shown as a single pulse signal generating circuit, switch contacts such as the use of such a digital signal reset signal or the stop si..
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A stator coil connection Shows the structure and connections of the stator coil, and FIG. (A) shows a triangular connection, Figure (b) shows a star connection, star connection..
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A three-phase squirrel cage induction motor by a prime mover (such as diesel engines, etc.) drag and asynchronous motor stator windings connected to the outlet end and a number..
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A typical laptop power adapter circuit A typical laptop power adapter circuit, the AC 22V voltage through the rectifier filter circuit output after +30V DC voltage, and then th..
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A typical representative of the dynamic noise reduction by the United States National Semiconductor first be successfully developed and integrated LM1894 (see Table 1-3), the u..
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A very cheap and simple repellents can be used for rats, mice and other animals may use electronic figure below. Circuit using CMOS integrated circuit type 4047 is connected to..
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A wide range of 7 ~ 40V turn 5VDC-DC step-down circuit is as follows: ..
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A, B is oxygen electromechanical motive in the two-phase three-phase power. Tl, T2 is wound around the outside of the two current sensing coil. When the normal power supply, Tl..
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A, B, c became indirect person capacitance Figure l-230 new access capacitor C is called the bootstrap capacitor. Self bootstrap capacitor can increase the voltage at point A. ..
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A/D conversion circuit is to convert the analog voltage into a digital signal encoding circuit, is shown in FIG using ADC0808/ADC0809 circuit chips, which can be O ~ V convert ..
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A1602A 40-pin dual in-line package, the circuit functions as follows: playback preamplifier is a linear low-noise amplifiers, voltage gain 26.4dBoA store cards, each with a sep..
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A8902 ; A8902 is a typical application wiring diagram. After a system failure signal by the delay Island and CB 11 feet into the motor brake, stop stop work until the RESET sig..
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AC adapter circuit It shows portable digital products AC adapter circuit, the low voltage DC into AC 220V voltage. The circuit configuration of switch power drill with oscillat..
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AC arc welding machine transistor load path of the power from the second circuit is shown. The figure, the current transformer TA core cross-section 25rrirr12, as l primary tur..
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AC contactor DC transformer circuit a run AC voltage regulator circuit operation DC contactors have a variety of types, ..
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AC contactor DC transformer circuit has run a variety of types, Transformer AC contactor DC operation circuit b ..
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AC contactor has a silent operation of the circuit due to energy-saving effect is remarkable, no noise, low operating temperature, extend life, etc., workers and peasants in th..
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AC contactor switch to DC or pulse DC excitation can subtract short ring and core power consumption, thereby greatly reducing the power consumption of the electromagnet, and ca..
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AC input circuit AC input circuit AC input circuit is a fuse Fl01, mutual inductance filter LF101, filter capacitor CX101, CY101, CY102 and some other structure into its main f..
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AC negative feedback circuit is composed of R R and islands (Figure 1-30), since the C3 AC can be regarded as a short circuit, the actual results shown in Figure 1-32 o It is a..
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AC solenoid DC circuit operation DC operation AC contactor circuit on the same principle, but the AC solenoid pull circuit as shown in FIG. Capacitance C- generally from 1-lOy,..
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AC voltage is rectified by a bridge (VD1-VD4). 3R1 limiting buck, VD5 clipping, a trapezoidal wave as the trigger circuit DC voltage and synchronization. When VT1 base of RP1 r..
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AC-DC-AC circuit when the power transistor as a switching device with analog control if built according to Figure 6-10 recommended wiring. Generating a voltage controlled oscil..
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AD, I70 is a signal conditioning integrated circuit RTD/PRTD design, it is very suitable 1K, lOOfl platinum RTD (PRTD). ADT70 internal integration of the instrumentation amplif..
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AD2S80A RDC tracking monolithic integrated circuit is ANALOG DE Vices latest generation RDC. It can be used to Synchro, resolver, inductive synchronizer digital conversion. It ..
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AD2S80A represents a typical application circuit, give a specific peripheral connectivity and device parameters. As illustrated, it is provided 12bit (SCl-0, Sc2 1), to select ..
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AD524 differential shielded drive as shown in Fig. AD524 The RC:, RCz not only gain setting foot, also output feedback (internal 20kfl resistance) circuit part of this operatio..
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AD524 low-drift (drift voltage 0.5mV, maximum drift 25 mV door C), low noise (0.3mVp p, 0.1-10Hz), good linearity ( 0.0030/0, a gain of l), high CMRR (120dB) gain bandwidth of ..
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AD574A is a high performance 12-bit successive approximation. A/D converter can be directly with the 8 or 16-bit microprocessor bus interface. Input into AD574A analog voltage,..
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AD590 is shown in the basic application circuit. Since the AD590 current output, series resistance to the output current is converted to voltage. Figure 1-31 (a) for the most b..
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AD594/595 and the relationship between the output temperature is: AD594: Vo (Voj + 16pLV) x193.4 (mV) Where: voJ J-type thermocouple output voltage. AD595: Vo (VOK + llIr, V) x..
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AD623 integrated 3-way amplifier. Single or dual supply can work with high CMRR and low voltage drift, programmable gain control in addition to an external resistor, all compon..
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ADP3000 internal block diagram of an integrated circuit It is a block diagram showing the internal structure of the high-frequency switching regulator IC ADP3000. ..
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AN6071 application circuit is shown. Relationship between the output voltage and temperature is% llOmV/oC. ..
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AN6610 Application Circuit It works briefly as follows: When the supply voltage vcc motor mechanical or negative change when the load changes, can cause changes in motor speed...
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AP500 is a high-performance dual-channel FET DC amplifier driver module. It uses a high operating voltage. Push power, low distortion, wide frequency response, simple external ..
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AR-300 DC arc welding machine circuit Rotary DC arc welding machine has AX, AX1, AX3 and AR series. Its structure is basically the same, are made of a three integral unit conve..
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ASIC design choosing highly integrated, low-power, short development cycle to complete this FPGA design to achieve a system of background, has a strong practical significance a..
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AURA VA50 company is famous for, from about 1989 to begin production (from this point we can see AURA company s history is very short) opening a launch would cause the aircraft..
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AX3-300-2 DC arc welding machine circuit Rotary DC arc welding machine has AX, AX1, AX3 and AR series. Its structure is basically the same, are made of a three integral unit co..
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Accelerate the role of capacitance To reduce the delay of the waveform, in parallel to the signal input resistor RK a speed-up capacitor CK, so that the pulse edge sharpened, c..
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Acoustic detector consists of a Schmitt trigger IC555 connected components. Just input exceeds a certain voltage, its output will change state, from high to low. R4 to set the ..
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Active lOA/loOw above, T several MHz high-power tube (the price is only about 3 to 4 yuan a, is fT of more than one-fifth SOMHz same power tube below) 6 we can use for producti..
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Active speaker with amplifier circuit TDA1521 and NE5532 composed of dual-channel input dual channel output. ..
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Adder circuit commonly used inverting input, namely the inverting adder circuit. It was to the inverting input of the operational amplifier electrical path, based on the signal..
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Addition and subtraction of the operational amplifier through an external amplifier feedback network enables integrated operational amplifier in a deep state of negative feedba..
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Adjust the exciter field rheostat RP, can change the exciter output voltage to adjust the generator excitation current section to achieve the change the generator output voltag..
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Adjustable Gain Test in preparation isolation amplifier circuit as shown below, the use of optical coupling isolation amplifier ISO100, adjustable gain can be composed tone tes..
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Adjusting potentiometer RP, the output voltage of the phase shift bridge diagonal oD phase change accordingly, thus obtained Rfz rectifier load power is also changed accordingl..
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Adjustment potentiometer RP, can change the pulse phase shift range. The phase shift circuit is in the range of 0. -1600 Higher sensitivity. ..
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Aforementioned asynchronous RS flip-flop is not synchronized with the system clock signal synchronous RS flip-flop is the addition of the synchronization can be synchronized wi..