New Circuits Page 268

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...

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..

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,..

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..

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, ..

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)..

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...

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..

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. ..

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..

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. ..

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...

Fixed three-terminal integrated voltage regulator can be directly used in various electronic devices as a voltage regulator. Since the internal set over current..

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...

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..

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..

The voice recorders entry information can be stored for 100 years, repeat 100,000 times, power consumption..

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. ..

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 ..

by the pulse generating circuit monitor signal monostable flip-flops Monitoring by the pulse signal constituting the single-shot generating circuit Pulse generating circuit..

Transistor optocouplers interface circuit as described in 15.1.6 has been. Transistor interface circuit with other circuit..

Mainly used for single-shot timing shaping and delay and so on. By a monostable trigger circuit 555 of integrated circuits..

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,..

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...

HIP6301 HIP6601 3 CPU function CheckPlobj ifobj.saytext.value == "" alert " e"; obj.saytext.focus; Using HIP6301 and HIP6601 chip 3-phase CPU power circuit..

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...

In this document is a simple calculator and PCB circuit board wiring diagram, simple, interested students can design their own!..

It is a total of four kinds of specifications. Three-phase bridge rectifier circuit. The output voltage from the regulator TY regulation...

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....

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....

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....

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....

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,....

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....

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....

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....

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....

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....

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)....

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...

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..

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...

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....

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...

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....

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....

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...

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..

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..

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...

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..

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 ..

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...

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 =....

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 ..

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..

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..

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..

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..

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..

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..

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,..

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 ..

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..

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..

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...

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....

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..

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 ..

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,..

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....

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..

(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..

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..

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..

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..

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..

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..

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..

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..

836MHz RF2347 low noise amplifier constituting a circuit diagram: ..

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..

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..

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..

A XICOR X9241 POT IC module can be used to adjust the four digital analog circuits, as shown in the schematic. ..

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..

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..

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 ..

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..

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..

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..

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..

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..

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..

A differential amplifier having input impedance equal to the circuit diagram: ..

A differential input differential output amplifying circuit diagram: ..

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..

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 ..