Top Circuits Page 37
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As shown for the voice-activated lamp circuit. The circuit consists of an operational amplifier FC52, flip-flop, the relay J, a piezoelectric crystal speaker y and other compon..
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As shown is a practical voice-activated switch, A1 amplifier connected as a conventional microphone B picked up the audio control signal is amplified. After the amplified signa..
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Circuit as shown, with a touch of a finger when the metal sheet S, N neon tube light, since N and photoresistor RG constitute optocouplers make RG resistance becomes smaller, s..
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Circuit principle as shown, neon tubes N1, N2 and photosensitive resistance RG1 constitute an optocoupler. When touching the metal sheet S1 with a finger, N1 light, so RG1 resi..
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Circuit shown in Figure 3-7. Just touch sensor chip (conductive sheet). Eight gear speed can be realized. CC4011 timing pulse oscillator consists of an integrated circuit Ai NA..
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380V air flow I. Power through step-down transformer, rectifier output 9V DC oxime arrested. When the pump working fine basket lr. uT shake F 41Sf button S. * Circuit TWH8778 s..
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3-2, the circuit by the touch electrode, when integrated with the base NE555 made double touch light switch circuit shown in Figure composition circuit and the triac circuit of..
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220V mains via diode VDi half-wave rectifier, the capacitor Cl-C3 charge, since the charge is not fully synchronized, so there must be a pilot thyristor through, lit lantern in..
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Is the use of Shenzhen Skywave Semiconductor Co., Ltd. of M] DOOI, five flash integrated circuit fabrication Shen Rd flashing lights controller,..
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DW l11 capacitor step-down into Jenru half crossing according to Yin electrical hoof. After receiving bin CI Sh power output terminal to liVI/r j Right cut blood flow voltage, ..
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It uses multi-vibrator 555 consisting of an integrated circuit, the oscillation frequency Ri,..
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20V child fS/iff power over a foreign vine wine Kiiit, bulb and plug Mount the bridge rectifier circuit. Poke seat access lamp LL n © number ur using 10- IOOW front with a smal..
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Darlington is a tube made double clam touch switch circuit is characterized by a touch sheet and 20V AC mains through the power transformer T isolated, relatively safe. After t..
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Construction of buildings, when full power is not required fluorescent continuous operation, the application dimmable electronic ballasts can further reduce power consumption w..
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Figure 2-39 is a typical application circuit JS88 manifold, the figure is oscillation resistor R, whose resistance to change can fine-tune the size of the water..
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In some of the requirements and the current is not rectified voltage power supply circuit is not high, can be used to form a light emitting diode rectifier circuit,..
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Fade fades the lighting circuit switch shown in Figure 1-12. The figure for the light switch S, H is accused of lighting. Transistor VT1, VT2 and RC components fade dimming con..
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FIG VDI ~ VD4 form a bridge diode rectifier, a full-wave transform the 220V AC pulsating DC, all the way for the red, green and blue (ie HI ~ H3) electric lights, another way t..
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Constantly changing light and sound analog controller circuit 05 ..
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Engaged in indoor portrait photography comrades know, single camera alone - Hong ye states pictures are often missing lack layering. In order to obtain better shooting results,..
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Constantly changing light and sound analog controller circuit 01 ..
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Constantly changing light and sound analog controller circuit 07 ..
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120V galvanic acupuncture salmon RI. Ma wind down a wind rectification, DZ limit irrigation to obtain the amplitude of 24V sad ioci {zr // ia Tsui, hook punch lung trigger circ..
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Digital integrated circuit is composed of ten road flashing lights string controller that drives El- El0 ten road string lights flashing cycle. The same, A2 is the - mf sequenc..
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Use of ordinary telephone ringing circuit KA2401 and peripheral components, the installation of the light control when the bell..
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EL auxiliary lights. When the lights dim in the ballroom, EL automatic lights, and a ballroom lights dim in the more serious,..
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Hens to provide adequate illumination can increase egg production rate, since when asked to shorten the winter sunshine, so chicken specialized households generally use artificial lights way for coop fill light...
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This design is to achieve a long-distance wireless remote control switch lighting control system consists of two parts the transmission system and the reception system...
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It shows a circular lighting control circuit. Circuit, rCl of four two-input NAND gate CD4011, which made of a non- door l, 2 multivibrator composed by the NAND gate 3,4 RS flip-flop circuit consisting of a pulse generated by the multivibrator shaping, ..
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Rw a77s power is the use of integrated circuit fabrication Ji-day double touch light switch, a special circuit point J. Cases the same. Bong electromechanical source transformer T Buck, v]) 1-VD4 rectifier..
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As a result of the relay control (several pairs of contacts, if more capacity is connected in parallel), so the lamp power can be large, the circuit is very simple, just change the capacitor capacitance, you can get a different flash frequency...
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As shown in FIG lighting controller with lights getting brighter gradually eliminate function, which can make the lights do not appear when the lights suddenly brighten the human eye irritation and damage the inrush current can be reduced when the ..
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220V AC after capacitive G buck regulator VS regulator, rectifier diode VD, capacitor filter to G IC (NE555) provides approximately 3.3V DC operating voltage. lC Schmitt trigger connected as light control. Night room inside light, the photosensitive resistor ..
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Shown for the automatic traffic intersection traffic light control circuit. Four monostable delay circuit inclusive The controller consists of four 555 (IC2 ~ IC5) and a number of RC components connected together. 8V input voltage through the 78M05 regulator..
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A circuit configuration is relatively new strong key touch-state switch. Normally, product thyristor VT1, VT2 are in the off-state I-what little light the lamp F. At this point..
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A good performance is a two-wire connection of double touch off indiscriminately even a broken line in the left part of the line for the general lighting, flowers portion of li..
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A simple and easy to do one-way flashing lights string twist troller, it asked the town to make the spider string gap flashes available to the small shop or home decoration, re..
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A use NF, double touch lamp ~ 55 base circuit made of switches. 2ZOV AC by [1-, c:, VDI, vs simple composition of a single power save buck and a half crossing fetters flow regu..
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A water Happy Valley -type four flashing lights string controller, electric bollard fp is a star for the use of a type j Ding Japanese lantern s 123 control specific integrated..
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AB generated at both ends of the voltage is adjusted to take after being rectified by supplying the motor armature windings, thereby adjusting 15W Lan achieve speed purposes. I..
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Application ikW high pressure mercury lamp ballast system; Figure 12.44 shows IR213D ikW for a high pressure mercury lamp ballast system schematic. Figure, not only IR2130 is u..
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As a result of the circuit shown in Darlington type phototransistor as the sensing element, the more sensitive to low light, suitable for the reflected light detection signal. ..
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As a result of the relay control (several pairs of contacts, if more capacity is connected in parallel), so the lamp power can be large, the circuit is very simple, just change..
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As is the use of thyristor controlled unidirectional flashing lights string controller, diodes VTI, VT2 connected to a multi-I are from Che oscillator, after power, VT1, VI12 t..
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As shown for the intensity of reflected light detection circuit. The circuit consists of an infrared light-emitting diodes, photodiodes, CMOS analog switches, operational ampli..
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As shown in FIG bathroom light switch gated automatic way, when someone enters, once the door is opened, the light switch is turned on bright lights. When the out door is opene..
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As shown in the circuit as a precision bright light control circuit, its work is not affected by the power supply voltage and ambient temperature. Resistors R1, R2, R6 and phot..
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As shown in the circuit as a precision bright light control circuit, its work is not affected by the power supply voltage and ambient temperature. Resistors R1, R2, R6 and phot..
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As shown in the circuit is a state of the flash output can change the speed of lighting control circuit according to the strength of eight timing of the audio signal. Circuit p..
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As shown with a bridge input circuit phototransistor BPY62 power operational amplifier and can control up to 8.5kW of power load off. Two 10k ohm resistor divider midpoint comp..
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As shown, the circuit 555 as the core, and the composition of the photosensitive resistor RG and RP1 like. RG strength with light exhibit different resistance, reset and set th..
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As shown, this circuit can automatically adjust the brightness according to ambient light intensity of light. If outside, high brightness, light on dark, whereas low ambient br..
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Automatic electronic circuit shown in Figure signs, it is mainly by voice circuit, an oscillation circuit and a driving part of the display circuit. ..
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Automatic lights using a light twist, it TWH87sl power switch integrated circuit composed of a first input terminal TWH8751 O feet to the positive terminal of the power supply,..
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BH-SK-I with the voice of a single bond integrated circuit fabrication touch light switch circuit shown in Figure, the dashed line in Figure 3-40 left section for the general l..
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By ASIC it is a flashing light string web dig troller, which has four outputs; single key cycle Control 1 6 kinds of tricks, and can choose 16 or section 8 before paragraph aft..
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By the transistor VTi, VT3 and VTs and RC components constitute three separate multi-resonator oscillator. Oscillation frequency levels dependent on the value Ri, R3, Rs and Cl..
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Circuit as shown, it is by the sound transducer sensing switch/electrical, light control switch, SCR control circuit, vocal music circuit and the AC step-down rectifier circuit..
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Circuit consists of three parts is light-control section 5: Two foot f light time control section; the third is the implementation part of dry i power supply section. JCz (NE55..
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Circuit shown in Figure 2-50. This circuit uses field effect tube should, through the ingenious electronic components constitute a unique self-lighting controller. The informal..
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Circuit shown in Figure 3-5. It can be manual (button SB) and light control (phototransistor VTj). When the light of a flashlight quasi VTi, fans will turn on the operation, an..
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Circuit shown in Figure, the dashed line in FIG left portion as an ordinary lighting circuit, the right part of the production of the double bonds of touch with NE555 3-3 Switc..
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Circuit works The fluorescent lamp electronic ballast circuit by the rectifier filter circuit, high-frequency oscillation circuit and output circuit. Circuit, the rectifier fil..
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Cl, VDI, VD2, C2 composed of simple capacitive step-down voltage regulator circuit + rectifier output of about 8v DC voltage for LM567 electricity. 5,6 feet manifold connected ..
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Clever use of a four-way slowly dimming LED driver integrated iU shoe production and Qis four flashing lights string controller. Ten Electronics Co., Ltd. Wenzhou production HF..
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Figure 2 foot emitting a flashing light switch circuit indication. when s is closed, normal light E lights flashing hair light indicates power loss of power does not work shoes..
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1832 low drift input 0. 07pr, V/oC (RTI, G 500), excellent linearity (maximum 0.005%), can drive resistive loads greater than 120fl bridge excitation circuit (output + 4 ~ + 15..
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1832 for bridge measurements, the external circuit is very simple, as shown in FIG. Belly adjust sensor bridge drive voltage ( feet), the adjustment range is +4 a + 10V, based ..
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Contact resistance measuring circuit shown in FIG. It mainly consists of a constant current circuit and amplifying circuit. Operational amplifier 1C1 and form a transistor VT a..
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Constituting simple LM3915 audio power meter circuit diagram Note: If the internal resistance of 4 speaker when, Rx take 10k If the internal resistance 8 speaker when, Rx take ..
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Explanation: This is a simple and low-cost broad-band high-frequency electric field strength meters. Field strength of the radio signal into a DC measurement, it is measured. R..
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Dual drive ICs 10LED level meter circuit Dual-drive IC is shown in the IO LED level meter circuit, the figure of two TLM8101 driver IC can also be used instead. ..
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Detecting electrical equipment, sometimes in order to more accurately measure the electrical current, the need to disconnect the circuit in series into the ammeter measurements..
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Direct measurement of soil content measurement circuit different areas of soil moisture, salinity, nitrogen, pH, etc., for soil improvement, various types of agricultural crops..
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Soil moisture meter circuit is usefull for monitoring the moisture at your plants. An easy circuit and very usefull...
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This circuit uses "and other potential triggers" Circuit. The so-called equipotential trigger means crystal bidirectional thyristor trigger, whether positive or negative trigger,..
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After each zero electromagnetic pickup has a sine wave input, as shown in the National Semiconductor LM2907 circuit will produce an output pulse, the circuit can be used for di..
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Also known as megger insulation resistance meter, the resistance in megohm level. Mainly used to measure the motor, the insulation resistance of electrical circuits, equipment,..
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Ammeter measuring current in the circuit, the need to break the circuit in series in the circuit to be measured. The clamp meter without the need for the case to break the circ..
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Application circuit of the device as shown in principle. In the meter, the voltage and current coil and the coil is connected to the power line, whether or not connected to a l..
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As shown in FIG INA337 constituted by the end of the load current measuring shunt circuit. Will produce a voltage drop when the circuit sampling resistor Rs in series between t..
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As shown in FIG constituted by ISO102 OPA27 500VDV DC current measurement circuit. Circuit between + 500V DC voltage source and the sampling resistor in series with a DC motor,..
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Capacitance/C tuck bit IJ volume level change is directly converted into electrical parameters, electrical parameters and then be converted to a unified signal transmission, pr..
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Capacitive measuring instrument, b is the direct reading instrument measuring the capacitance of the circuit. The measuring instrument is capable of measuring a few picofarads ..
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Circuit in the frequency range, an accuracy greater than 2%, for the production of bode curve. Two sine wave into a square wave, while the amount of overlap compared with the t..
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Commonly used high sensitivity header is actually using microampere meter, use it to produce resistance meter using voltage can be very low, but producers still with the law an..
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Figure 1.88 using the loudness of several tapped the potentiometer control circuit. In FIG. (A), and between the tap and the input of the potentiometer and the land respectivel..
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DC voltage present on the telephone line is usually about 45 to 50V, on-hook and off-hook to 6V. The step-down circuit relay is activated. Relay control tape recorder. Audio is..
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Diodes VD8 ~ VDI1, SCR vs composition control switch main circuit isolation diode VD7, stable orbital tube VD6, simple resistor capacitor C4 constitute buck regulator circuit, ..
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Optically isolated phone automatic recording interface circuit, IC3 voice module...
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A wireless hands-free telephone device circuit diagram as follows: ..
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Automatic light is introduced by the telephone block system, the phone rang that night and asked the owner to pick up the handset or pull L, the lamp will light up; the phone s..
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Automatic recording telephone interface circuit as shown, the circuit has an automatic answering and recording function (need to reprovision or small solid state recorder recor..
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Automatic telephone responder circuit is shown in Fig. FIG IC2 10 seconds voice recording circuit SR9G10A, press the power switch S2, can be built by IC2 electret microphone in..
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By phone automatically when the lamp base circuit NE555 and optocouplers constituted a call at night, light will automatically light up, hang up delay imi. About, self-extingui..
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CX9800 models of mobile phones and desktop PC have chosen excellent performance voice processing circuit, the amplitude and bandwidth of the microphone signal is compressed to ..
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Circuit principle outside into the phone when ringing pulses through C1, R1, D2 to C2 charging voltage in 6V, this voltage causes N1, N2 reverse, V1 analog hook, and start V4, ..
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Circuit principle: computers AC power load is large, the use of the current transformer current sensing. It can be used to detect whether a current power line, determine its st..
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Multi-spark ignition is very useful especially in the case of startings at low temperature and at low rpm range. Basic idea, is to apply to spark plugs instead of only one spark, a ?spark-burst? having big energy. In this case, combustion of air/fuel mixture....
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This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs no voltage regulators (it has a built in voltage regulator) and can be powered from almost every source. When the test button is pressed, the Car battery voltage....