For the purpose of raising early and better seeding, in the village, people always use plastic film to make up simple raise seed shed in the ground. Th...
Used in transistorized color tv to provide response slope opposite that of i-f amplifier. Automatic color control signal reduces voltage gain of first ...
Used to convert input current steps from Tektronix 575 or other curve tracer lo output voltage steps for let gate.-R. Williams, Adapter for Curve Trace...
The 2N4393 JFET was selected because of its low IGss (＜100 pA), very low ID(off) (＜ 100 pA) and low pinchoff voltage. Leakages of this level put th...
10-channel with thumbwheel-program mable-priority logic for scanner/monitor receiver (courtesy Motorola Semiconductor Products Inc.)....
The digital lock circuit is composed of the input control circuit, reset circuit, counter / divider circuit and control implementation circuit, and it ...
The TP5700 or TP5710 can reduce the number of components required to build a pulse-dialing telephone, as shown. The usual current source can be elimina...
The circuit is an audio oscillator based around IC1, a 555 astable that drives a piezo disk directly. Transistor TRI acts as a switch and will enable t...
Real-time telephone automatic recording device circuit is shown in the above picture. Despite automatic recording for the making calls and answering ca...
This dual-comparator, multirate video sync stripper provides separate horizontal and vertical pulses that are consistent with the composite video-input...
These circuits show a visible red LED (MFOE76) that is used as fiberoptic drivers for both noninverting and inverting TTL inputs. Figure 9-34B shows ty...
Body fluids are electrolyte for implanted silver and zinc electrodes that provide d-c power for four-transistor pacemaker. Secondary of T1 provides fee...
A 2N5777 photo-Darlington cell picks up blinking light from the transparent plastic buttons. The power is switched ON and OFF by a hibeta 2N3904 transi...
Infrared transmitter circuit is composed of the capacitance feedback oscillator circuit, 40kHz pulse oscillator and driver circuit, and it is shown as ...
The SL523 shown In this figure is similar to the SL521 shown in Fig.3-2，except that the SL523 is a dual amplifier and provides an approximate 24～dB...
Many systems require routine maintenance based on machine operation time. The circuit below is a simple way to turn on a hour meter whenever AC power i...
Electronic scanner using television fiying-spot microscope measures irregular micro-scopic tissue areas of spongy bone, for earlydiagnosis of bone dise...
The sound control toy kitten circuit is shown in the picture. It is made up of two parts which are sound control switch and kitten mew generator. The m...
Picture is viewed on half-silvered mirror that combines images of red and green 14-inch picture tubes. Receiver circuits accept standard NTSC color. si...
The circuit shown in this paper uses 12 components to form a miniature wireless FM microphone with stable operating frequency, and its transmitting dis...
Use of AD590 current-ratioed differential-pair IC temperature transducer gives low parts count for temperature-to-frequency converter. Sensor controls ...
In this circuit, an LT1193 differential amplifier is placed across a distribution cable to extract the video signal. Common-mode signals are rejected b...
The circuit is suitable for satellite to transmit the ECG with bandwidth in 0.5 ~ 50Hz or other medical data in electronic systems. Audio signal is use...
The TL431 basic application circuit is shown in the picture.(a)Parallel voltage regulator circuit. (b)Series voltage regulator circuit. (c)Over-voltage...
The circuit requires neither a battery nor an ac supply to make it work. Set the recorder to the record position and when the telephone is taken off th...
Uses CA3130 BiMOS op amp that operates at a frequency of 1 kHz. With rail-to-rail output swing, frequency is independent of supply voltage, device, and...
The most commonly used phase shifter phase difference is 90 °. Shown in Figure 1, in the RC phase shift circuit, even the amplitude is allowed down to...
TV video IF output and detector with AFT and sound take-off output. All coils and transformers are standard and can be purchased at a local electronic ...
Transducer bridge is energized at points A-A by external 3-kc oscillator. Unbalance voltage is amplified by V10 and demodulated by second bridge that o...
The picture shows the flashing musical gyroscopic circuit. It is made up of musical IC UM66T19L and multi-color LED LED1~LED4. When the gyro is in the ...
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