Top Circuits Page 62
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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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Differential amplifier circuit four connection methods and compare the characteristics of d d. O magnification equal to a single tube of half has a high common mode rejection c..
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Differential amplifier circuit four connection methods and characteristics of comparison c c. O magnification with a single tube with the same When the circuit is symmetrical. ..
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Differential amplifier circuit four connection methods and compare the characteristics of a a. O magnification and single-pipe with When the circuit is symmetrical common-mode ..
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Device for intermediate relay. As shown in Figure is the use of Triac AC contactor interface circuitry. Which is using MOC3041 Triac output optical coupler for triggering the T..
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Electric shavers thorn circuit shown in Figure 1-17. Shown by the capacitance C buck, buck capacitor C is lyF/450V, pass through the diode VD, to 1.2V nickel-cadmium batteries...
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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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Connection of the stator coils b Shows the structure and connections of the stator coil, and FIG. (A) shows a triangular connection, Figure (b) shows a star connection, star co..
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Constant current function module is disabled port junction figure, 13 feet; OFF, constant current ban port. Loss of function when OFF constant current is grounded, the module i..
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The figure can add a buffer gate at the input, so that the circuit compatible with TTL or other logic. This request is to TTL0V circuit to 3.5V input signal swing to..
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The system uses optical fingerprint sensor with ARM Cortex M3 core STMicroelectronics 32-bit high-performance microcontroller STM32F205RE..
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Shown for the XTR108 three-wire RTD connection circuit. Sensor connection RTD lead resistance may introduce errors. Using the figure ..
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It shows the use of various forms of pulse signal generating circuit operational amplifier...
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The circuit uses a motor auto-voltage transformer start...
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This circuit can generate a signal lkHz and three output level options. It can be used to test communication equipment maintenance and barriers, can be quickly and accurately..
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TMP01 is a temperature sensor that comes with a programmable temperature controller, primarily integrated reference voltage source, a current..
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The figure for the feedback voltage Vf, it is taken from the output voltage Vo by EQ network. Input voltage Vf..
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In order to ensure that the transistor in the circuit to work properly, it is often the reverse breakdown voltage of the transistor to be measured...
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DC-coupled multi-stage amplifier circuit b (3) multi-stage DC-coupled amplifier in DC-coupled by a multi-stage amplifier circuit amplifying circuit, if used NPN type transistor of each stage,..
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As shown in FIG grounds ISO122 / 124 and PGA102, ISO150 constituted with a gain programmable channel isolation circuit. ..
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CD4013 dual D flip-flop on the rising edge. Its internal block diagram and pins are shown. Ministry of standard model C043, GB model CC4013,..
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A simple IF AGC signal over a wide dynamic range and excellent linearity characteristics, it may be composed of two chips to obtain:..
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National Semiconductor (NS Company) production of audio ICs wide frequency response, low noise, assembled with its audio circuits, very good performance in all NS o The company integrated ..
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Affected by environmental interference by = to transfer switching Confidence disgrace will produce burrs. Switch position signal will control the computer system with lanthanum burr reliability..
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It works semiconductor color sensor can be summarized as follows. The figure shows the spectral response curve of two photodiodes have a point of intersection, when the wavelength of the light incident on the corresponding intersection,..
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(1) using thyristor incandescent dimming circuit one circuit is shown in Figure 2-66. Figure 2-66 (a) using thyristor half- wave controlled dimmer and dimmer with diode approach. ..
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Now the capacitor C from the speed differential negative feedback. Adjustment potentiometer RP, can change the amount of negative feedback. It can be used simultaneously both the necessary circuit...
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With a CD4060 shown below production time controller circuit connected instantly, guaranteed by R5, C3 constitute a differential circuit delay time from scratch. Under the action of the oscillating signal,..
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as the picture shows. BA313 is a built-in automatic level control circuit (ALC) of audio recording preamplifier circuit, commonly used in the cassette tape recorder, 9-pin DIP dual in-line package,..
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Great LM111 / 211/311 power supply voltage range ( 5V ~ l5V), bias current, offset current, the differential input voltage range ( 30V), whose output is compatible with TTL, DTL and MOS circuits, and You can drive LEDs and relays . ..
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If the CMOS circuit load (actuator) is a relay device, the circuit must have a large load capacity. Non-gate drive switching amplifiers ..
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The system consists of a CD player, amplifier, speakers, power supply, headphones. Mitsumi CD machine designed for the United States and 97 years in mainland China launched a 4-speed CD-ROM, and to speed up the panel out of box keys,..
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It is said that the mice are more sensitive to electromagnetic fields, which is why the high-voltage grid rodent generally poor results. Electronic rodent control described here, no high-voltage power line usually, it does not cause mouse alert,..
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Trigger circuit routing forms, such as some simple trigger circuit, single-junction transistor trigger circuit, synchronous sine wave trigger circuit, sawtooth transition phase shift (synchronous) trigger circuit, integrated trigger circuit...
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The iron intelligent control circuit shown. In this circuit, the integrated circuit PT8A351X, irons by placing direction detection identification switch, relay and LED control, when the iron horizontally, @ feet high, iron after..
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Tape output circuit by the left and right channel signals through the first buffer amplifier, the output signal of two routes, all the way directly to the amplifier amplifies the other way into the end-pass filter for filtering...
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Circuit principle: After turning on the switch SA1,220V transformer transformer, bridge rectifier into DC, the computer control panel power supply. Root According to the barbecue food, the computer control panel set high or low temperatures. At the same time....
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Used 1488kHz master oscillator quartz crystal resonator frequency stabilization, the output from the frequency divider dividing, obtained 4kHz, 12kHz, 124kHz three different square wave signal output. Circuit is shown. Transistor ..
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This circuit is used to maintain the level between two fixed points. Just transform K1 contacts off the case, it can be filling or extraction work in two ways. Load can use AC motor or solenoid-operated valve. The liquid level is detected by the two probes....
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When the battery voltage is 7 ~ 12. 6V range, the light emitting diode VLi lights, which light cutting almost unchanged. If the battery voltage falls under 7V VLi beginning red light emitting diode, and a light emitting diode , L2 brightness decreases. ..
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The introduction for unidirectional thyristor trigger circuit is equally applicable to the TRIAC. Here are some also for bidirectional circuit shown in Figure 16-28. Figure 16-28 (a) and (b) is a direct trigger circuit; Figure 16-28 (c)..
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(1) dimming circuit capacitor circuit shown in Figure 2-63. When the switch SA from "1" hit "3" position, in ascending order of capacity, light bulb degree also in ascending order. When SA hit the "0" position, the lamp, and....
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One Foot Spot Welder circuit The circuit uses IC CD4541 A precise delay characteristics, to achieve through welding electrical time constant, which can ensure the welding quality when welding the same weldment...
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The AV combination as shown in lo-2, the first stage Philips TDA1029 four-input switching signal for the switch; the second stage uses NE5532 as preamplifier, B of the NEC, the company pPC18 92..
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AN6657 is a 16-pin dual in-line plastic package, AN6657S 16-pin dual flat plastic package. 1. Speed Control works with internal H-bridge driver chip circuit, 5 and 8 feet H-bridge driver output,..
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Synchronous vibration Ai, a liter zygomatic count number, control logic i NIE armpit three parts. Internal oscillator start-up Ai Road [U l: zero just after the sync pulse. Stop Ding Zhen sync pulse close to the lower..
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As shown by PGA204 / 205 to the shield drive circuit of FIG. As evidenced by the interference theory and practice, the cable shield weak signal transmission with a certain potential, ..
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Currently, high-quality communications receiver in the use of diode ring mixers and mixer by a double differential pair balanced modulator constituted, set into an analog multiplier (MC1496)..
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Homemade disinfectant circuit of the present example describes the electrolytic salt solution method to produce sodium hypochlorite (NaCk "disinfectant can be used for students living supplies disinfection...
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AN7522 is the product for Panasonic stereo audio amplifier IC, the output power of 3W / 8 ohms, with a standby function and a small static power consumption, low noise, fewer external..
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It has a strong anti-jamming capability, suitable for demanding applications. Circuit by the phototransistor VTi, Schmitt trigger H005, JK flip-flop H013, power amplifier circuit VTz relay KA and actuators and other components. ..
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Shown for the XTR105 reverse voltage and over-voltage surge protection circuit. Zener diode is 36V, or choose 1N4753A 1N6286A. Maximum Vps must be less than the minimum zener..
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MAX420 is a monolithic chopper OP amplifier supply voltage is 15 V (ICL76s0 supply voltage of i5V), with good input characteristics. Input offset voltage l V. ..
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MAX1516 charge pump drives up to 8 from light LED, with a constant current regulation, in order to achieve a uniform light intensity, it can drive up to 30mA each LED, used for backlighting...
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Fixed three-terminal integrated voltage regulator can be directly used in various electronic devices as a voltage regulator. Since the internal set over current..
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Circuit is a very common three-terminal linear regulator expansion flow circuit, when we actually use, because there is no encounter some well-considered or is lower false failures...
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The picture shows the use of a linear potentiometer (or linear Hall element) control two chassis drive motor PWM generation circuit gamepad or joystick on the model aircraft. J1 is the handle of the..
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Circuit works: Rp1 ~ Rp13 scale resistance to the keyboard, but also the oscillator timing resistor, C2 is wide discharge capacitor, S1-S13, the key switch. Press S1 a S13 any one, such as pressing S1, the +6 V power supply..
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The voice recorders entry information can be stored for 100 years, repeat 100,000 times, power consumption..
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The installation of an electrical outlet in the refrigerator work light, not only to facilitate the observation of the refrigerator stops, but also increase the beauty of the socket. Circuit is shown. ..
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Rice cooked rice cooker notification circuit works: When the rice cooker to work, A, B both ends voltage is 0, the entire circuit does not work. When the rice cooker boiled dry, the master switch trip, then A, B both ends ..
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by the pulse generating circuit monitor signal monostable flip-flops Monitoring by the pulse signal constituting the single-shot generating circuit Pulse generating circuit..
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Transistor optocouplers interface circuit as described in 15.1.6 has been. Transistor interface circuit with other circuit..
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Mainly used for single-shot timing shaping and delay and so on. By a monostable trigger circuit 555 of integrated circuits..
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There are two composite pipe constitute ways: one is by the two transistors of the same type, as shown) as shown; the other is composed of two different types of pipe configuration,..
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DC solid state relay (DC-SSR) driving high-power load circuit is shown in (a) below; high power load driving circuit shown in (b) below...
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HIP6301 HIP6601 3 CPU function CheckPlobj ifobj.saytext.value == "" alert " e"; obj.saytext.focus; Using HIP6301 and HIP6601 chip 3-phase CPU power circuit..
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MAX233 / 233A multi-channel data interface circuit, the circuit has dual output, dual input of the driver circuit, for small digital products, multimedia equipment for data transmission...
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In this document is a simple calculator and PCB circuit board wiring diagram, simple, interested students can design their own!..
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It is a total of four kinds of specifications. Three-phase bridge rectifier circuit. The output voltage from the regulator TY regulation...
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IED is a hotel, restaurants, family common and effective tool for the eradication of mosquitoes, as shown in Figure 16-12a. Diode voltage doubler rectifier circuit manner to produce a high voltage. When mosquitoes see the light, toward the IED when high....
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Adjustment potentiometer RPi, can change the thyristor VI, V2 conduction angle, that is changing the DC motor M speed. Speed feedback circuit is [by tachometer generator TG and potentiometer RP2 (to adjust the amount of feedback)], in fact, is now closed....
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Shown for the high-precision, high-impedance instrument OPA2111 amplifier configuration. Total voltage circuit illustrated magnification Av = 10 (1 + 2R2 / R1) = 1000 times. A gain stage 10 of the differential amplifier circuit is to expand the....
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It uses a transistor control circuit. When the grid voltage is normal, relay KA pull, turn the power load. When the grid voltage is below the minimum allowable value (can be set by the potentiometer RPz), or higher than the maximum allowable value (by RPi....
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Circuit works: The temperature stabilizer from the main oscillator DD1.1, C1, R1, R2 and VD1, monostable multivibrator R3, VD2, VT1, C2, R4, DD1.2, R7, R8, thermal resistors R5, R6, inverter DD1.3, strobe oscillator DD1.4, R11, C4, triac circuit VT2, T, R12,....
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Circuit shown in Figure 3-62. The circuit is a step-down start button manually controlled. At startup, the first motor windings connected into Y-shaped, and then successively transferred to the Yanbian shape (2: 1), Yanbian shape (1 t 2), and finally....
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Circuit works:, VT3 and peripheral components configured as a common-base capacitance feedback oscillation circuit, the oscillation frequency is determined by C8, C9, L1. VT2 voltage amplification stage, and put back the audio signal with a large amplitude....
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It is seen from the ring, when vri off, 0 [2 is turned on, the current through RJ, Ci: When VT1 conduction, charging Cl start discharge. Then give cl inverting charge, I voltage becomes positive, vri turned on. So uc: close O, so that VT2 base electrode....
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Due to the different circumstances of the various input signals, when the pin is applied between the abnormal voltage, protection circuits to form a circuit path from while LSI (large scale integration) circuits internal protection. Structure and principles....
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The circuit is suitable for inductive loads in general thyristor power unit (three-phase step-down DC motor speed and other exceptions), the output power more than enough to trigger thyristor 100A. Adjustment potentiometer RPz, can change the output pulse....
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Circuit works: two self-test table contact pads sensed across the skin to the electric pressure changes lC input of 5 feet, can drive 10 LED (present circuit only with 5 LED). When the voltage is 5 feet 150 mV, LED1 light; when the voltage elevated to 650....
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About solid (body) relay AC solid state relay (AC-SSR) of the basic application circuit shown in Figure (a) below; With TTL drive SSR circuit is shown in (b) below; SSR with CMOS driver circuit is shown in (c) below; SSR thyristor drive circuit shown in (d)....
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As shown for the ISO107 ripple reduction circuit. The circuit at the output plus an RC high-pass filter for filtering the output voltage ripple, without affecting the DC characteristics conditions 800kHz ripple voltage can be reduced to <3mVp-p...
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TDA2040 is yet another power Lings amplifier. Its operating voltage range is wider than the TDA2030, 2. Room ~ 20V, output power is large, the 16V, 4fl load 18W output power, distortion degree is also greatly reduced. Application circuit is shown..
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Data signal output, transmission distance when Sm the following circuit configuration may be employed as shown, the main measure is the output terminal of the pull-up resistor at the receiving end of two pull-up and pull down resistors...
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Conventional single junction transistor trigger circuit can only be issued narrow pulse, the reason is because the single-junction transistor is turned quickly cut stop. To do this in a single-junction transistor trigger circuit adds a PNP transistor can be....
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The electronic circuit birds under different lighting, especially in the vagaries of the neon light irradiation, can be issued fluctuated, changing tone sound of birds, the sound is constantly changing. Its circuit is shown...
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Single pulse signal generating circuit d Shown as a single pulse signal generating circuit, switch contacts such as the use of such a digital signal reset signal or the stop signal is to be formed, this one-shot pulse generating circuit can be used. This....
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Shows the use of C-MOS IC count divider circuit, as in Fig. LC main TC4040, wash it is a 12, 14 -bit counter, the circuit can be made using any of the frequency dividing ratio of the circuit, for example, can be made 1 / divider circuit 3600 (signal of one....
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Phototransistor also called phototransistor, it is more commonly used as a photosensitive device, which is characterized by photosensitive resistors and photodiode same impedance can be adjusted according to the size of their own light intensity...
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As shown in FIG TDA6103Q test circuit with feedback factor is 1/150. Input signal Vi1, Vi2, Vi3 through the input resistor network consists of capacitors into the TDA6103Q 1,2,3 feet, 2, 3 feet and 5 feet are inside the differential input stage of..
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The circuit consists of K-type thermocouple cold junction compensation circuit, precision 5. OOOV reference voltage source and OP113 composition, can o-lOooqc to measure the temperature, the temperature resolution of 0.02cC. OP113 wide range of precision..
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Voltmeter by the measuring mechanism in a given circle and moving coil in series to configure certain additional resistance. Nl is constant circle, N2 for the moving coil, R., Rz is additional resistance, U1, U2 to limit the amount of voltage...
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For its typical application circuit o R2, R3 is a feedback circuit to adjust their ratio, adjustable circuit loop gain o To increase the dynamic range of the circuit, the C5 and R5, R bootstrap circuit. TDA1514A boot noise suppression is achieved by..
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The first power amplifier circuit shown in Figure 5-88. Using the "op amp of the Emperor" NE5: 5 32 5 times for line amplifiers, power amp choice Manifold TDAI5210 TDA1521 fidelity OCL dual power supply, the output of this circuit eliminates ..
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GH-75 type circuit hydrogen atom welder Hydrogen bonding, is not melted by the use of hydrogen in two under the protection between the tungsten electrode WG produce electric arc welding wire in hydrogen melting workpiece weld region under the protection of...
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There are no-load and short circuit protection short circuit protection. To allow time short circuit, it must increase the resistors R1 and R2 allows power dissipation, such as R1 = 1.2k Europe, 20W; R2 = 220 Europe, 4W. Technical data: Output voltage: U2 =....