As shown, OBO V20C as lightning protection module, lightning damage maximum current of 40kA; k relay; KM for the contactor; FU for the fuse; HL traffic lights. ..
As shown, the 555 and the surrounding elements constitute a voltage - frequency conversion circuit. For determining the orientation of Earths magnetic field is a Hall-effect de..
As shown, the apparatus includes cavers point detection circuit and triggering display circuit. The cavers instrument is a test probe grip in the hands of another probe touches..
As shown, the call falls by the position sensing circuit trigger control circuit and SOS alarm circuit. For critically ill patients or for help with a disabled person falls. Pa..
As shown, the circuit consisting of two discrete PNP Darlington transistors constituting the external PNP transistor QEXT circuit to expand output current. Here we do not advoc..
As shown, the circuit consists of a dual-core 556 and the light emitting tube. The left half of the IC (556 1/2) composition R1, R2, C1, etc. frequency of about 2Hz multivibrat..
As shown, the circuit includes a clock pulse generator, and a pulse distribution circuit drives the display circuit. 555 and RP1, R1, R2, C1 composition astable multivibrator, ..
As shown, the circuit is canceled due to an external transistor becomes simplified. The connection between both original external transistor emitter feet and legs a 3.3k resist..
As shown, the circuit uses the LM129 regulator to generate 6.9V voltage reference, provided 1.0147mA current from 6.9V reference voltage to the bridge. Bridge may be as pressur..
As shown, the circuit voltage source VREF excitations sensor bridge. This is a very good incentives, the excitation voltage VEX VREF (1 + R1/R2), wherein both ends of the bridg..
As shown, the circuit will combine XTR101 with isolation amplifier ISO100 use, the 4 ~ 20mA current transformation and enlarged to + 1 ~ + 5v voltage output, while isolating th..
As shown, the control terminal 5 feet and 555 threshold end 6 feet is actually two internal input voltage comparator I, as long as 6 feet voltage is higher than 5 feet 5mV, the..
As shown, the controller includes a buck rectifier circuit 555 multivibrator, lantern control circuit for ~ 220V, 5W low power parallel control lights or 6 ~ 12V small bulb ser..
As shown, the information apparatus comprises buck rectifier power supply (Vdd + 12V), the timing circuit, multivibrator, the output of the first amplifier and function. IC1 an..
As shown, the long wire current loop transmission will be introduced radio frequency (RF) interference, RF energy can cause sensitive XTR108 input errors, performance in an uns..
As shown, the power supply terminal to use 1 F chip capacitor filter, and should be as close to the chip supply pin placement. Signal produced by 2 feet and 3 feet input, signa..
As shown, the proximity switch 555 as the core component monostable trigger circuit. 555 Trigger Pin 2 through the large resistance R2 connected to VDD, is waiting for a trigge..
As shown, the three lights control circuit 555 as the core, consisting of cyclic trigger monostable delay circuit, the brightest of the SCR control the cycle turned, lights wer..
As shown, the two current sources inside the chip (1 foot and 14 feet out) bridge excitation, the output of each current source is 0.2mA (XTR114) or 0.5A (XTR112). With RCM adj..
As shown, this circuit is mainly used in a timely reminder dozing who can supervise and the number of records on duty were asleep. Figure d detection circuit is a minute signal..
As shown, this circuit is suitable for shooting at night and turned on the lights corridor. During the day due to sufficient light, BG3 conduction, SCR blocking oscillation cir..
As shown, this is a closed loop made up of three identical composition of the Schmitt trigger, end to end. Each flip-flop delay is td l. 1 (RP + R) C, i.e., the voltage on C td..
As shown, when not in external transistor Q1, connect a 3.3k resistor between feet and legs. With this connection circuit due to internal power dissipation affect accuracy will..
As we all know, when a single-supply op amp, a bipolar signal environment to achieve a simple function may be difficult. Sometimes the need for additional operational amplifier..
Asynchronous motor reactive power compensation on the spot, is the capacitor directly connected with the asynchronous motor stator windings connected to increase the power of a..
At present, more and more patients with osteoarthritis, osteoarthritis to relieve the tremendous suffering to the patient, so that patients return to normal life. In this case ..
At the input of the operational amplifier plus a resistor - diode network can be constructed square-law function conversion circuit. Resistor - diode network and form a voltage..
Attenuation is a feedback tone control circuit consists of transistors and RC network formed. Circuit, RPz low tone control potentiometer, RP3 treble control potentiometer o Wh..
Audio equipment from the former speaker output terminals left and right channel signal, the Rl, RZ mixed units, after ICla buffer into the high and low pass filter. Filter uses..
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....