New Circuits Page 260
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Conducting pipe control rechargeable short delay circuit 2 Adjustment potentiometer RP, allows the delay time of several hundred milliseconds to several seconds. ..
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Crystal is a one-way ordinary transistor triggered threatened tube dimmer light circuit, VT2, V hired composition complementary amplifier to form the thyristor VT1 trigger circ..
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Fade-in fade-out light switch can turn on and off when the lamp brightness changes slowly, and the brightness can be adjusted. (1) One of fade-dimming lamp switch circuit circu..
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FIG VDI, VD2, Rl and Cl form resistance voltage half-wave rectifier circuit, the output DC voltage 5v supply manifold with electricity. R2 for the manifold provides AC zero-cro..
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Easy to take along four dimmer switch circuit shown in Figure 8, which has a 4-speed brightness of combination: When the switch Sl, S2 and S3 compete portion is closed, the lam..
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Development and production of special touch dimmer integrated circuit, it has a dark, medium, light, take along a touch against the four side light function for zero trigger, h..
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DTL internal structure shown in the inverter circuit (M5936P) is. Inputs with diodes, transistors signal processing, power supply is + 5V. When the input terminal A high level ..
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Core elements of this circuit is the second four-input NOR gate terminal IC CD4001, the entire circuit is simple structure, less components, easy to make, especially for remote..
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Current-voltage conversion circuit is often used in the current detection circuit, shown 6-19 ring inverter air conditioner current detection circuit, the circuit is mainly use..
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FET can be used as a linear amplifier, a logic gate circuit may also be made, ..
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Explanation Here is a simple 100-watt using IC CD4047 and IRF540 MOSFET of the inverter circuit diagram. The circuit is simple, low cost, or even assemble a veroboard. CD 4047 ..
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Efficient inverter control circuit It shows a highly efficient inverter control circuit, which is used as the LCD backlight power supply circuit, which is mainly controlled by ..
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Described in this article is a band-pass filter is a circuit diagram of transistors, as shown below. ..
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Due to the amplifier frequency characteristics and impact of parasitic capacitance, to make hundreds of kilohertz to the active filter is very difficult.. On the other hand, si..
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Double r circuit consists of three resistors, three capacitors, substantially symmetrical double insanity single passive attenuation characteristics of the filter element 0 0.2..
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Electronic filter The effect of the capacitor c5 is filtered. Cs fact constitute a composite pipe with an electronic filter, as shown in FIG. Thus the advantage law by using sm..
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Figure 1-102 high-pass filter in FIG. (A), and if we take C1 C2, R1 1/2, then the crossover, H 1/2 root of 2 R1C1. For Figure (b), if take C1 C2, R1 1/4R2, its crossover fH 1/2..
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Figure 1-1 The general-purpose timer once timing of 5 minutes to 18 hours; the timing cycle from 5 minutes to 20 hours; the total time of the timing and the timing to open and ..
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Exposure timer circuit is shown in Figure D flip-flops, timing can be arbitrarily selected within the 1 ~ 30s. Figure D flip-flop circuit connected to a one-shot, when you need..
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Explanation Here is a simple circuit diagram frequency (F and V) voltage conversion. It found that the digital frequency meter circuit, the circuit is mainly based on a LM555 t..
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Electromagnetic RBI timer simple structure, low price, high school physics experiment teaching is one of the most widely used instruments. The main disadvantage of the experime..
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Electric start and stop the timer circuit diagram shown in the following cycle, LM555 adjustable duty cycle when the base integrated circuits multivibrator, the C3 charge-disch..
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DMOS power switch ON-state resistance has a positive temperature coefficient, four switches can be arbitrarily parallel to increase the load current, and therefore a monolithic..
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Fig application circuit is a three-phase full-wave six-step driving an open loop motor controller circuit connection diagram. Wherein the power switching transistor Darlington ..
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Desheng 119 700 type FM, TV sound, medium wave, short wave high sensitivity l2-band stereo radio circuit diagram as follows: ..
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Desheng Rl212A 12-band FM, MW, SW, television sound stereo radio circuit diagram as follows: ..
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Electrical pulses generated by the first base circuit pin output, and then sent through R6 piezoelectric speaker BLD, switched to the electric pulse ultrasonic waves to space r..
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Discrete components ultrasonic transmitter circuit T/R-40-16 can emit a series of ultrasonic signal of 40kHz. This circuit voltage of 9V, operating current of 25mA, control dis..
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Electronic Miss Manners infrared receiver and voice circuits ..
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Currently using stereo decoder IC itself because the manufacturing process can ensure separation between the two channels of 45 dB or more, only to the intermediate frequency a..
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FM radio transmitter is a high-frequency amplifier circuit. This circuit uses Mitsubishi frequency set successfully discharge path M57704H. Using radio frequency modulation, th..
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FM radio circuit is shown by a double-gate MOS field-effect transistor, the high frequency amplifier is a bipolar MOS field effect transistor amplifier consisting of (VTI, VT2)..
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Drawing, potentiometer RP for adjusting the operating voltage of the relay KA, ensure that the motor work normally when E KA does not operate reliably action phase failure occu..
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Controller as shown, including the acoustic-electric conversion and amplification circuit, a clock pulse generator, counting circuit and control circuit. It controls four accom..
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Depending on the external circuit connection, 555 may be formed start delay, trigger delay, multi-harmonic oscillation mode and other working conditions, it is with some RC com..
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Fantasy lights, wonderful changes can be used to store, dance hall or family holiday decorations. Its control circuit is shown. Lantern multivibrator control circuit, a control..
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Electronic decorative peacock composed of 10 light-emitting diodes, each light emitting diode includes a plurality of light-emitting diodes, light-emitting diodes mounted in th..
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FIG. 555 and R1, C1 and other components monostable delay circuit, the input square wave signal or square wave signal by a Schmitt trigger shaping after the trigger requirement..
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Direct reading frequency meter by the amplifier, and trigger one-shot circuit and table top components. It can be directly detected in the read head of the table 1mA signal, th..
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Control button switches SB1-SB4 can be installed in different positions corridor, just move SB1 ~ SB4 any one button, lights EL horse lights on, and after decompression transfo..
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Features voice switches with Figure 2109. From single-junction transistor VT2 and RC components delay the circuit. Adjustment potentiometer RP3 or capacity capacitor C3 can cha..
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Family karaoke 0K lighting design of a variety of methods to control circuit, the control circuit described here is a kind of four-way light output, loop jump, speed controllab..
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FIG. 283 is a blackout emergency lighting controller, it is only the external side in the two lead s, can directly replace P Chan Tong Ge opening, when there is electricity, it..
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FIG. 284 is a practical power emergency lights, which is characterized only when lights turn on in case of a sudden stop electricity. Fluorescent lights will alternate power fo..
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Driving at night, when there is a vehicle rendezvous, according to traffic regulations prescribed distance should begin two vehicles alternately opening and closing the big lig..
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Figure 2-78 is SH-841 as the core device made holiday lights controller. By SCR VSl ~ VS4 to drive light string H1 ~ H4 flashes. Manifold operating voltage by AC by VD1-VD4 bri..
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Figure 2-80 with the SH-868 is an integrated circuit made music flash circuit, which uses three battery power supply. Can drive flashing light emitting tube, while electronic m..
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Figure 2-85 is a single road SH-80051 produced flash string, SH-80051 chip only four ports: positive power supply terminal VDD; synchronization input zc; negative power supply ..
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Figure 282 foot another simple power outage should emergency lamp circuit. When the grid is often only power and municipal electricity by T Buck, VD1 ~ VD4 rectification, C- cr..
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Pressure transmitter circuit data acquisition system by 1B31,18 bit A / D converter AD1170 and MCS-51 microcontroller..
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A/D converter is the analog signal into a digital circuit, it has a variety of circuits, as shown in Figures 21-24 is a circuit A/D converter structure, which is the use of a p..
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As shown in the commonly used liquid crystal television video A/D converter AD9887, the chip can be analog R, G, B signal is converted into a digital signal output. ..
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Audio A/D converter circuit configuration, the circuit CS5333 chip, which is a high-performance 24 bit 96 kHz stereo A/D converter, commonly used in digital products, a microph..
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Composition audio ICL8038 function generator shown in FIG. IC using ICL8038. Resistance Ri potentiometer RP1 to determine feet straight flow potential Bian,..
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Audio signal control circuit It shows a typical audio signal control circuit. Two audio signal into the integrated circuit through the switching and tone (treble,..
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The circuit can be selectively tuned in two very close in tone. Selective frequency is determined by the value of the feedback circuit collector and the base of Q1 between the capacitors and resistors..
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Use NJM2701 3D surround sound audio processor integrated circuit can be designed a very simple 3D surround sound system. NJM2701 is a 3D surround audio processor reproducing 3D surround sound with only two speakers. NJM2701 is suitable for audio applications,..
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LM4610 is a US company following the LM1036 NS after the launch of a new class of high-end HIFI tone IC, LM1036 is the ideal alternative, it is also the use of two-channel DC voltage to regulate the volume, treble, bass, balance. The IC also increase based..
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AUD.LIMITER The level can limit level trim potentiometer to adjust. If you exceed the level of the potentiometer, the output from the half of the operational amplifier (as a co..
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An audio frequency signal generator shown in FIG. Can output audio signal, 465kHz spectral amplitude signals, 52,5Hz4-16Q5kHz high frequency amplitude modulated signal. VT1 hig..
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As shown in FIG audio circuit is commonly used in color television, TA8218AH pin functions and reference voltage: Pin 1: 1.9V-- inverting input Pin 2: 2.1V - R-channel audio si..
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As shown in Figure Block Diagram for the system. Important Important programs for broadcast monitoring period, using the selected demodulator, can be displayed by the presence ..
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As shown in the audio circuit is commonly used in color television sets (TDA2009) Pin 1: 1.2V-- left channel input Pin 2: 0.8V-- left channel feedback Pin 3: 12V-- Squelch 4 fe..
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Can simulate the character Mu symbol, I need bone dish SET code which benefit s decimal point well Jl; inverted J to open his mouth. Left foot [ circuit diagram ..
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Circuit shown in Figure, LD168 is a flash of tape recorders speaker for sound level indication ASIC. It has four outputs can directly drive a plurality of light emitting diodes..
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Colour is often used as shown in audio circuit (TDA1521), the circuit is taken from Changhong C2191, the OTL two-channel connection. TDA1521 pin functions and reference voltage..
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TDA1510 Philips company's audio power amplifier. The IC features a load short {open load, overheat protection circuit. Having an output of static voltage stability, ripple..
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NS LM4766 US company launched a two-channel power amplifier integrated circuits, each channel on 8 load can output 40W average power, and distortion is less than 0.1%, in National Semiconductor's product range,..
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Figure 1-44 is dedicated BTL amplifier circuit, containing two single amplifier, and has integrated the relevant elements in the circuit, so the connection is very simple...
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LM2002 / 2002A is an audio power amplifier integrated circuits, LM2002A high pressure protection, the maximum instantaneous power supply voltage up to 40V 5-pin single in-line plastic package...
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Amp 2SC2922 and 2SA1216 (or 2SC3264 and 2SA1295) performance is very excellent more, it is good linearity, strong overload. Use it as a high-fidelity power amplifier stage amplifier, the performance is very excellent photos...
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TDA1308 is class AB headphone driver IC Philips recently launched its biggest feature is the small size, low power consumption, is particularly suitable for portable CD players and other digital audio Xin also be used for CD..
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Shown for the extended common mode input voltage range of the instrument amplifier circuit. The circuit A1, A2 and A3 can be precision instrument amplifier INA101 or INA102 constitution. ..
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Shown for the LM4904 audio input differential amplifier circuit...
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With bass boost compensation for the practical power amplifier circuit. Follow the instructions on the subject of the amplifier circuit element parameters, when the switch Sl, S2 are disconnected,..
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Europe's leading SGS-THOMSON STMicroelectronics recently introduced a tone quite new to the Chinese mainland hydrazine fos power integrated amplifier TDA7294, swept past the linear integrated..
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As shown for the LM4819 audio power amplifier. An audio signal input through Ci, Ri coupling applied to the amplifier inverting input terminal (4 feet), and the amplifier inverting input terminal (pin 3) ..
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When used in the servo system, often using the current drive connection. Figure 11-1, the output current IOUT and the input channel number y.. It is proportional. Current drive mode can be reduced because the motor has a large inductance causes a phase....
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6AQ5W / 6005UL four-channel single-ended amplifier circuit shown in FIG. Shown are only - channels. 4-channel system - using a power transformer for voltage amplification section uses Tokyo light sound 4CP-2508-SA type 4 with volume potentiometer..
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The mechanical and electrical schematic in Figure 5 112 in FIG. Chant is a schematic diagram of the channel can be seen from the figure, the entire circuit is very simple. It consists of the following components: (1) electronic crossover section 6 ICl..
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NE5532 preamp generally used, performance is very good. Now used as a small power amplifier, how effective And the general op-amp circuit is almost the same, but one of the resistors, capacitors have a greater change, the state and not the same op-amp circuit...
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The circuit is the use of FET amplifier circuit for output. NE5532 op amp using 15V power supply, pushing its output FET output stage after stage voltage amplification. Voltage output stage bias circuit of the input from the pre-stage of 15V, after VT3, VT4 ..
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(Only shown the R channel, the original reference PCB label) o Figure (a) for the front tone circuit. The RC circuit genus common negative feedback operational amplifier. Microphone signal amplification by VTz after the VR3 fed ici negative input signal is....
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AN7112 power amplifier circuit diagram ..
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About PWM Class D audio amplifier, during the past half century, foreign miscellaneous Chi constantly been explored reported. The main features of this technology attractive ou..
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After the graphic equalizers are universally applied, and the emergence of a new kind of equalizer, called a parametric equalizer that amount of EQ, or from the internal circui..
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Although the IC has been replaced to a large extent this circuit, the flexibility of the circuit design of discrete devices still make it practical. The parts are readily avail..
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Although the TDA7293 longer beautiful, but in fact excellent strength, still have to tell you about, for enthusiasts may be a review. TDA7293 is ST (SGS-THOMSON) company produc..
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Always wanted to do morning exercise machine, also suffering no single power can not find high-power amplifier, as morning exercise machine is battery powered, so thinking abou..
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Amplifier circuit of this paper is to introduce a floating power supply, the purpose is to increase the output power, the amplifier output power with only the final stage ampli..
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Amplifier circuit shown in Figure 2-25. It has the following features: (1) promote the use of a class 6N11 tube for parallel push-pull amplification entire term, high-frequency..
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As shown for the low-frequency output 7W power amplifier circuit. The circuit uses a FET input type operational amplifier LF356 integrated as a voltage amplification. The class..
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As shown in FIG To eliminate hum instrument amplifier circuit. FIG amplifier stage A1, A2 selected integrated operational amplifier INA101, followed by level A3 selection INA10..
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As shown in FIG constitute grounds PGA103 programmable gain instrumentation amplifier. This circuit uses the PGA205 and PGA103 cascading manner, the total gain of the amplifier..
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As shown in FIG grounds PGA203 and isolation amplifier IS0102 constitute isolated programmable gain instrumentation amplifier circuit. PGA203 then amplified by the input signal..
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As shown in FIG simple audio amplifier circuit. Using the integrated op-amp configuration of audio amplifier is stable, easy to negative feedback, so it is easy to get equaliza..
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As shown in FIG source constituted by PGA203 programmable instrumentation amplifier suspended. Because the input signal is applied to PCA203 twisted pair inputs, so in suspensi..
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As shown in Figure 3-30 to promote the use of IC LA4425 stage power amplifier, a pair of power module 1490 as a push-pull output, since the impedance converter, whether the spe..
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As shown, the use of the operational amplifier A for audio preamplifier circuit. The advantage is small size, low noise, low power consumption, good consistency. A operational ..
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As the main part of the circuit has been achieved Ic! Of bulk components are primarily large number of capacitors. Internal circuit shown, the output level from the A t, Tr. Co..