New Circuits Page 267
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As shown in the timer 555 is triggered by the positive trigger pulse, then a negative output pulses. In the absence of beating duty cycle greater than 99%. Heavy loads can be s..
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As shown, the circuit including a four 2-input NAND gate and a CMOS CD4011 type 555, and thus the output of either a static or high-time period, the power consumption is minima..
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Child lock voltage comparator 555 monostable circuit, a counter, JK flip-flop, UPS power supply design digital logic circuit, electronic door control, and a variety of addition..
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Circuit diagram all three parts of the series resonant crystal and triple CD4049 inverter connection. Supply voltage range is 3-15V. Compact, low-power RF oscillator portable b..
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Combined monostable multivibrator 555 and a pair of light control and light control comparator monostable phase. Depending on the time of the circuit can be used to enable load..
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Common monostable circuit in two ways: manual start type and start pulse type. Single-shot pulse start ..
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The sound card for a PC generally has a microphone input, speaker output and sometimes line inputs and outputs. The mic input is designed for dynamic microphones only in impedance range of 200 to 600 ohms. Lazar has adapted the sound card to use..
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Circuit as shown. This circuit uses NEC Corporation of Japan as a major production upc1651 integrated circuit device, the circuit gain high, stable, thus ensuring high performance microphone. It consists of using the FM transmitter circuit...
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AM This circuit is tested and functionable. LM389 integrated circuit as the core element, the voice channel number acquired by the microphone MIC and converted into electrical ..
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As shown in FIG constituted by INA217 professional miniature microphone (microphone) typical preamp circuit. FIG set a switch for selecting whether the choice of phantom power ..
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Because the common mode signal rejection ratio depends on the input transformer, it should be used or homemade good balance transformer (It should be noted l frequency increase..
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Both transistors are low noise types. In the original circuit, I used BC650C which is an ultra low noise device. These transistors are now hard to find but BC109C are a good re..
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Shows a 32.768 kl-b: micro-power clock oscillator circuit, and can be used in mobile phones, laptop computers and home appliances production generates a clock signal supplements...
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Shown for the WS157 or WS106 with low power miniature switching power supply. WS157 or WS106 is newly developed in recent years a regulated switching power supply control device, the internal control circuitry and power switches integrated on the same chip,..
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Compared to other operational amplifier, OP90 significant advantage in low power consumption. With its low power consumption, the power supply voltage adapted to a wide range (..
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As illustrated, the control circuit by the NE555 and phototransistor, R1, C1, C2 and so on. Photodiodes 3DU12 when sunlight to photodiodes, due to its resistance becomes smaller, so that the voltage of the circuit 555 is greater than 6 feet,..
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Application Circuit biaxial magnetic field sensor shown. Using a biaxial magnetic sensor HMC1002, two AMP04 (A1, A2), the magnetic field can simultaneously measure the X-axis d..
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As shown in FIG grounds HMC1001 and an operational amplifier (AMP04) and light emitting diode (LED) constituting the proximity switch circuit. As used herein, the op amp as a c..
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Biaxial magnetic field sensor application circuit as shown in FIG. Using a biaxial magnetic sensor HMC1002, two AMP04 (A1, A2), the magnetic field can simultaneously measure th..
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By LK16-5/31 type master controller and PQY1 Series Magnetic control panel consisting of a control circuit. Figure, SQ1, SQ2 the motor is, reverse limit switch. Master controll..
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By LK16-5/31 type master controller and PQY2 Series Magnetic control panel consisting of a control circuit. The figure shows, PQY2 series control panel and magnetic series of m..
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By master controller LKl-12/90 and a magnetic disk control PQR10A composed of a control circuit. Cam control device SA contact closure is shown in Table 8-5. The main electrica..
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By master controller and PQS1 Series Magnetic control panel consisting of a control circuit for controlling the bridge crane hoist lifting mechanism of control. Master controll..
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Circuit shown in Figure 3-36. Starter contact closure is shown in table 3-1. Figure, Ul, Vi, wl and U2, vz, W2 are the first three-phase stator windings of the motor terminal. ..
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Incandescent is a two-wire connection Life Extension open curse, i A warm-up time than its H K, so scorpionfish life bubble E is quite pregnant. After closing the Ji Guan S, 220V AC only negative 3F week by VD1,..
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One (1) Electronic Ballast circuit circuit shown in Figure 2-11. This circuit uses special fluorescent lamp starter thyristor SCR Y1112, ordinary thyristor phase than having to maintain a higher..
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The figure shows that input from the varistor overvoltage protection role. VDi - VD4 rectifier, L1, C2, q filtering. R, c9 and VD6 composition oscillation starting circuit, the transformer T and H, V and other components transformer coupling high-frequency..
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786A multi-functional double-tube fluorescent emergency circuit shown in Figure 2-129. This circuit is similar to Figure 2-125. ..
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As a Nissan Panasonic rechargeable emergency fluorescent lamp circuit. Built-in 6V, 4A. h high-energy batteries can be directly charged. It allows the two 6W fluorescent lamps...
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As shown for the lighting inverter circuit principle 6 ~ 12W fluorescent lamps. After mains buck, rectifier, filter charging the battery. When switched inverter operation, gene..
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As shown for the lighting inverter circuit principle 6 ~ 8W fluorescent. The circuit is suitable for lighting 6 ~ W fluorescent tube circuit parameters are marked in the figure..
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As shown in FIG economic fluorescent display circuit. The core of the circuit is the multivibrator 555 and R1, R2, C1 and other components of the oscillation frequency is f 1.4..
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By adding a second pull tube in the circuit, when the starter ionization. In the positive half cycle diode conduction, from the whole flow effect, the current in the circuit is..
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As shown by FIG MAX4102/4103 Video configuration/RF distribution amplifier. Signal input MAX4102/4103, after amplification the output. To make the transfer process reflection m..
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As shown in Fig having a 50 input/output impedance of broadband video amplifier. In order to achieve a match signal transmission, reducing the reflected signal, often require i..
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CRT final video driver amplifier FIG complementary push-pull final video driver amplifier, which is composed of three transistors, VT511 as a driver amplifier, which uses a com..
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Commonly used for camera or computer with B/W TV connection, the bandwidth of the amplifier gain of 3 and having 10MHz. ..
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Five of the transistor time relay circuit b (a) for the exchange of time relay, Figure (b) is a linear flow of time following, the use of only two different power supply,..
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The multifunction circuit mainly refers to it can be "delayed pull", "time release", "delayed cycle" conversion three operating modes...
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Motor winding is delta transposition capacitance cl -C -3G DC Lan speed generator and three-phase asynchronous motor coaxial cs mechanically connected by a field winding powered disabilities 10V...
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Relays AC arc welding machine load since the three-way power circuit shown in Figure 522 relay KA selection type, 24V; time relay KT selection JS7 Ying, 0.4-180s...
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JG series of photoelectric relay circuit. For the circuit to work reliably, we have adopted the Schmitt trigger circuit. These circuits are similar, when there is light incident on the photosensitive member, the internal resistance becomes smaller, the....
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It uses two LM358 op amp A2 and Ar as an upper limit and a lower limit voltage electrical voltage measurement comparison control circuit. RPi adjustment potentiometer and RP2, can change the upper limit voltage and lower voltage setting...
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Competition is ~ relay contacts contactor control systems often encounter problems, too much trouble to deal with, and sometimes need to add a lot of elements to add. However, if the use of negative temperature coefficient thermistor (NTC) delay switching..
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Three single-junction transistor time relay circuits It uses pulse charging circuit, and therefore can be done for a long time delay, maximum up to tens of minutes. FIG unijunctions VTi and other groups into the first stage delay circuit, charging the..
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A relay control circuit It shows the relay control circuit. There are many in the microwave switches, such as the power supply switch is turned on can be achieved, switch off p..
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A relay-style five electronic Responder Responder group circuit. The circuit has a self-locking, sound and light display, monitor time and other functions. Large ones may be in..
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A transmitting circuit, power, infrared light-emitting diode emits light receiving circuit shown in Figure, receives infrared light transistor 3DU5, the received signal output ..
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After the turn-off circuit is first applied to the next KA KA, intermediate interval required less than Is, this is because when the time is up to 3 times the charge time const..
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As a photoelectric switch with photoresistor circuit, the sensitivity is very high, as shown for the light control relay. At low illumination, VT nonconductive; when there is l..
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As shown below, the following figure is the use of a relay or the like of the starting circuit. Power input access resistance R, R role there are two, one: to prevent boot when..
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As shown in FIG relay is non-inductive analog circuit theory. working principle: 220V power supply via a load RL, R1, D1 ~ D4, ZD1, as Q4, Q3 in turn provide positive and negat..
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As shown in FIG relay the delayed release operational amplifier circuit. When the power switch, the inverting input terminal of the operational amplifier is added resistor 4.7k..
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As shown is composed of a transistor relay delay pull circuit. Just power, 16 F capacitor voltage is zero, two transistors are off, the relay does not operate. With 16 F capaci..
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As shown relay delay pull transistor circuit. Just power, 16 F capacitor voltage is zero, two transistors are off, the relay does not operate. With 16 F capacitor charge, over ..
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As shown, the circuit by the sound detection circuit and the monostable trigger circuit, the actuator for the relay. VT1 complete input audio signal amplification, when the sig..
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By cross-connect telephone ringing circuit, when the phone rang, the circuit closes the relay. It uses the delay in contact, thus to drive any bells, sirens, buzzers or lights...
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Charging time relay circuit 2 It is a long delay circuit. When the capacitor C is 5000yF, the delay can be up to 1. 3h. By transistors VTi and regulator VS2, VS3 group as a con..
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Circuit by the delay loop, discriminators, output circuits, power and lights of five parts. Part of the power regulator by resistance R, and the regulator vs constituted power ..
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Circuit shown in Figure 3-13. Figure, RC surge absorption circuit is, R, zinc oxide varistors (such as MY31 type, MYH12 type, MYH20 type, etc.), an overvoltage protection devic..
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Circuit shown in Figure 3-159. The circuit uses complement each other three times and three relay contacts, followed by the automatic removal of the rotor circuit resistance le..
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Circuit shown in Figure 3-161. Figure, the first stage starting current detection by the current relay KIi Ri in series with the second stage starting current relay KI2 detecte..
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Circuit shown in Figure 3-162. in graph. SBi is forward the start button, SBz to reverse the start button, SB3 for the stop button. Start switching resistance levels are contro..
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Circuit shown in Figure 3-49. The circuit autotransformer out of operation by the time relay KT control. KT delay time is equal to the motor start-up time. Circuit shown in Fig..
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Circuit shown in Figure 6-24. Both ends of the relay coil in parallel with a resistor Rf or auxiliary diode VD, is equivalent to power after a short circuit coil core increase,..
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L a few custom IC 66} began to slow music. When the song ends, no electricity flows through the thyristor, the thyristor then cut straight in the light once again shines on the phototransistor Bu [I a mountain. Roundworm parallel Tiao Ping] I XsJ, people....
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Circuit with the original m rJ bamboo is also exactly the same way. Trl lose. the secondary disk sV flood-what I guanidine by day. t love grass-flow filter for a light 4Pl iU p..
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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....