The power supply circuitry consists of a 220/2 * 18V / 3.5A transformer, a rectifier, a smoothing filter, a power amplifier, LM301, and two regulators LM317 and LM337. The theoretical of the circuit is shown in the figure. The voltage from the transformer is....

This pulse generator produces square pulses from 1Hz to 100KHz with adjustable pulse width of nearly 0-100%. The generator is powered with a voltage of 5-15V and is therefore suitable for both TTL and CMOS circuits. If you want to measure the response of an....

Figure (a) shows the output amplifier circuit 170W at 4 loads; LM4651 is a former circuit class D amplifier, a 28-pin DIP package, the internal equivalent circuit is shown in (..

FIG dual-channel circuit LM378 dual operational amplifier composed of Europe. Supply voltage Ub 24V and 8 ohm load (or 16 Euro), the output power per channel 4W. Circuit with i..

Figure 3-16 is a low-noise preamplifier equalizing HA12017 consisting playback circuit, the circuit R3, R4 and C4, in line with standard maggots balanced network. The gain stag..

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..

DC power supply is a helium-neon laser excitation power supply currently used the most common form of power, there is shown a laser printer used in the road, Tl as power transf..

Explanation The circuit is nothing more than two light emitting diodes (D1 and D2), its position is controlled by the temperature of the surrounding environment. Here the tempe..

Drive the light emitting diode is shown in the digital display circuit, the count signal to ICM7217 feet in the chip by the count and after the coding process to drive the digi..

FIG load test is a control circuit. This external load circuit up to 10A, widely used in the drive test power, the power amplifier, LED solenoids and relays, and the carrying c..

Figure 1-87 is a good loudness volume control circuit, it uses an ordinary potentiometer, used element pieces are scarce, but the effect is quite remarkable. The electric road ..

DC current of negative feedback BTL circuit shown in Figure 2, the abolition of the standard BTL circuit C12, C22, the circuit of the DC; resistor R16 and R26 are sampling resi..

Fans decorative light circuit in Figure 2-130, the circuit consists of step-down rectifier circuit, lattice specific integrated sound and light control roads and other componen..

Expressed LM629 PWM outputs directly drive LM18298 dual H -bridge circuit conditions. The latter is a switching amplifier, two H-bridge in parallel to drive a small DC servo mo..

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..

Low-noise preamplifier circuit It shows a typical low-noise preamplifier circuit, an amplifier may be used to signal ..

By the regulator circuit output voltage of the potentiometer Rp, and has a linear regulation characteristics. Figure (b) shows the output..

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,..

Use of ordinary telephone ringing circuit KA2401 and peripheral components, the installation of the light control when the bell..

Low phase noise voltage controlled oscillator circuit a It shows a typical low phase noise voltage controlled oscillator circuit, which..

220V AC voltage through a capacitor C] buck, rectifier bridge pile UR were barrier-wave rectifier, filter capacitor Cz, after the Zener diode voltage into DC voltage. Photoresi..

General Dynamic LED digital clock have no timekeeping function, just add here a simple circuit it can bring the whole point timekeeping function...

555 Timer enables low-loss single-shot circuit and CMOS4011B NAND gate circuit interface. Standby power consumption of less than 50 A. When the one-shot circuit is turned on, t..

220V mains electricity sent through 0.33 u F (Ci). ] 50kn ohmic drop Sui, Di - D4 bridge circuit composed of rectifier. After 100 u F capacitor filter technology,: [born about ..

220V AC by the step-down transformer T, a diode VDI-VD4 bridge rectifier and filter capacitor CI, output of about 12V DC voltage for the entire circuit use. Light control circu..

4 Application examples of applications are given in the figure, it is a Winchester disk drives three-phase brushless DC motor, the operating speed is 3600r/min. Although the or..

LA5522 Application Circuit It works briefly as follows: When the supply voltage vcc motor mechanical or negative change when the load changes,..

Gate F4, F5, F6 together form a low frequency oscillator, driving high brightness light-emitting diode flashes,..

As shown in FIG ordinary triode 3DA87C to make long-range FM transmitter circuit,..

I used the components on hand, comprehensive reference ..

By analyzing the filter capacitance or inductance is filtered DC output is still more or less volatility. In situations requiring high level..

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,..