This article describes the High-Voltage Regulator With Short Circuit Protection (MJE350). The principle is very simple, very practical. The circuit com...
Used to protect navigation system against damage if phase rotation is reversed by careless or accidental power transfers. With correct rotation, lamp A...
Circuit diagram Copyright Audio kit amplifier circuit diagrams. All rights reserved....
Cmos IC protection All MOS?devices have insulated gates that are subject to voltage breakdown. For instance the gate oxide for Motorola CMOS devices is...
This kind of circuit is composed of the reflective type infrared sensor head, the 555 time-base trigger circuit and the relay control circuit.etc, as t...
Over Voltage Protector Circuit Using SCR PARTS LIST VR1 2.5kΩ SCR1 1A 50V SCR S1 N.O. Switch RL1 12V Relay A silicon-controlled rectifier is installed...
In the figure is the loudspeaker protection circuit. The circuit is designed to have the left and right channels and they work separately.Elements sele...
Figure 1 Normally, in a digital voltmeter, high input impedance of the preamplifier stage is protected against very high voltages by two diodes. One of...
The protection circuit which utilizes commutation of diode and the characteristic of low forward-direction voltage drop is shown as picture a,b.Just as...
This circuit combines diode and transistor together.When the input voltage is between 3 and 30V,the incoming current of LED of the optoelectronic isola...
When starting button is pressed,the voltage between L2 and L3 go to AC contactor KM through Stop button 51,start push button 52 ,the normally-closed co...
Call timer circuit is shown as above. The protective alarm deviceis installedin the user telephone line, when telephone line is stolen,short circuit, o...
An overvoltage protector circuit is shown in the schematic diagram below. This circuit will work to disconnect the protected device from the power supp...
See as the figure, the circuit adopts the capacitor step-down and the simple regulated power supply circuit, when the power supply is normal, the volta...
This overvoltage protection or crowbar protection circuit is used where we need protection against high voltage surge. The circuit has a few components...
This circuit is similar to that of Fig. 7-11, but with diodes that protect against capacitor discharge (because of input or output shorts)....
Figure 1 The circuit diagram shows the overvoltage protection as a feature of LM317 linear voltage regulator. Overvoltages come from several source or ...
This article describes the Loudspeaker Protection and Muting (BC556). The content is very simple, very helpful. Components in this article can help you...
View Full Size Image View Original Datasheet The LTC4366 surge stopper protects loads from high voltage transients. By controlling the gate of an exter...
The power supply switch S will be closed if the water pipe has not water, P and the ground is similar to insulation condition, the inverter ICl inputs ...
Optoisolators provide cross-connection between solid-state triac relay circuits to eliminate possibility that two or more triacs come on at same time d...
This article describes the Protect a Vehicle-Reverse Camera (LM393AD). The principle is very simple, very practical. The circuit components can help yo...
The picture 49 is over-voltage protection circuit of high voltage power supply circuit.The over-voltage power supply is provided by output voltage and ...
MCP is a multi-package produce, it can put the integrated protection circuit and charge-discharge circuit into the same package. The internal block dia...
The small and contactless fridge time delay protector The contactless fridge has a few elements, and it's low-cost, small-size and without debugging, o...
This protection circuit is inserted between the reset switch and the motherboard. The earth connection of the computer must be linked to terminal M of ...
Work of the circuitThe circuit consists of speaker BL, voltage indicator HL, self-excited audio oscillator, the clutch switch S1, S2 and pressure sensi...
If you watch TV in thunderstorm days, lightning will damage the TV tuner by outdoor antenna. If you install the varistor in outdoor antenna, it may pla...
How to protect an SCR using protection circuits ? SCRs are sensitive to high voltage , over-current , and any form of transients. For satisfactory and ...
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