The video-link transmitter accepts color and B/W video, and audio inputs from VCRs, camcorders, small TV cameras, and microphones. The unit runs on a n...
Time delay circuit using a UJT. Maximum time delay is set by the 10M pot. Time delay can be set from less than a second to approximately 2.5 minutes (c...
Uses 200-v 15-amp transistor with high power dissipation characteristics and low thermal resistance. Drive requirements are substantially reduced becau...
X1, X2-plug terminals, FU-fuse, PT-timer, ST-limit thermostat, SB-hand button, HL1-heating lamp, HL2-heat indicator, VD-rectifier diode, EH-heater...
The circuit shown here does an adequate job of allowing you to fade a video signal virtually down to the black level without losing sync on the monitor...
Uses AMI S2561 CMOS IC to simulate effects of telephone bell by producing tone signal that shifts between two predetermined frequencies at about 16 Hz....
The converters, which are named with part-resonance, multi-resonance, current commutation type and so on, are the zero voltage switch converters with t...
The electronic bird circuit can emit fluctuated and different birds sound in different light, especially in the changing neon light irradiation, and it...
Circuit operates push-to-talk of mobile station automatically when any button on Touch-Tone pad is pushed for dialing telephone number after making aut...
This circuit shows a triac motor-speed control that derives feedback from a magnet-coil tachometer that is placed near the motor fan (Figs. 8-17B and 8...
The Telephone loll Totalizer-built around two 4 518 dual synchronous up counters, a 74C925 4-digit counter, a 4 584 hex inverting buffer, and a 4081 qu...
The motor brake circuit is composed of the power transformer T, rectifier diodes VD1 ~ VD4, variable resistor R, capacitor C, relay K, AC contactors KM...
PLC810PG group and LLC lineless controller integrate with high pressure half-bridge driver. Picture 1 shows the circuit of PLC810PC power supply config...
Measures r-f power oscillator output, for establishing irradiation and calibration procedures and positioning techniques when using focused ultrasound ...
This circuit uses a CA3059 zero-voltage switch to control triac operation. The turn-on time of the triac (and thus the current through load RL) is set ...
The Siemens MC75 is the first GSM/GPRS radio module featuring EDGE technology, which is theoretically has a maximum bit rate of 474 kbps compared to GP...
Under control of logic input, DG509 four-channel differential analog multiplexer connects selected one of four thermocouples to instrumentation amplifi...
The two-speed exhausting fancomposed ofpole-changing adjustable speed motor is widely used in high-rise and underground buildings. Usually it runs at l...
Here we would like to introduce you to a 1962 Chevrolet 6 electrical schematic wiring diagram. We recommend wiring work steps are: first carefully read...
Used at receiving end of leased telephone line in which single tone frequency serves for alarm and other purposes. A1 is 741 opamp connected as inverti...
Circuit has same characteristics as single unijunction transistor but dissipates only microwatts of power when off.-R. A. Wilson, Pnp Plus Npn Equals U...
The LT1109/LT1109A is low-power-consumption DC-DC convertor. Its output voltage has fixed three types which are 5V, 12V and adjustable output voltage. ...
The following measures are taken to promise a clear voice of the microphone: the output signal of MIC is first sent to BG1 to be amplified. R1 and C1 i...
Two-transistor circuit provides high ratio of reverse to for. ward base drive. Oscillator current is 0.12 amp, output-stage current 0.72 amp, und push-...
Uses passive fiber to separate color subcarrier frequency front sync burst, along with injection-locked oscillator that combines amplitude limiting and...
Q1 amplifies the output from an electret microphone MIC1．Audio is fed into oscillator Q2，whichmodulates the signal．LIC1 is a tank circuit for ope...
The electronic password switch circuit is composed of the password control circuit and control implementation circuit, and it is shown in Figure 3-97. ...
Color TV chroma processor using an ECG797 16-pin QIP with AFPC, ACC, andkiller (courtesy GTE Sylvania Incorporated)....
Drives anesthetic pump servomotor in response to signals from electroencephalograph that continuously monitors border of wakefulness of patient undergo...
Air exhaled by patient is sampled and analyzed for carbon dioxide concentration by commercial infrared analyzer that provides electrical output proport...
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