It's a taboo for fridge to get power in intermittence, especially off and on in short times. To avoid the compressor is on and off repeatedly and to pr...
Deteuls absence of any one of several critical supply voltages of either polarity and energizes interlocking relay to prevent damage to components. Num...
The output of digital integrated circuits must also be protected. Figure a, bare the output protection circuit. Figure a is common protection circuit, ...
View Full Size Image View Original Datasheet The LTC4360 overvoltage protection controller safeguards 2.5V to 5.5V systems from power supply overvoltag...
The picture is the overvoltage and overcurrent protection circuit composed of NE555. VT1 and VT ends, NE555 resets, and all of the transistor is in con...
The working principle of the circuit. Start step, dc voltage power from the secondary coil of the transformer will be charged to C1. through D1.When th...
When the voltage suddenly rises because of some reason,household appliances such as the running refrigerators, washing machines, televisions, stereos, ...
The current transformer LH couples out the current which flows the three phase proportionally, after rectificated and filtered by D1, D2, D3, C1, C2, C...
Diodes and transistors form the circuit, when the input voltage range is 3 ~ 30V DC, the input current of MOC3011 optical isolator LED is limited to be...
The automatic refrigerator protection line is simple with full function, reliable sensitive action, and it is useful accessory for refrigerator. When t...
The multi-functional leakage protection switch uses Nissan M54122 which can constitute multifunctional leakage protection switch.The magnetic field is ...
Circuit NotesThe silicon controllqd rectifier (SCR) is rated to handle at least the current of the power supply. It is connected in parallel across the...
See as Figure 13-8, the protector is formed by sub-circuits of the step-down rectifier, delay starter, over/low voltage sample and trigger,etc. The pro...
A common problem in modem communications is that family members often pick up extensions during a modem call. Forget about having your downloads messed...
Transistors Q1, Q2, and Q3 monitor the two outputs of the stereo amplifier. If the offsets exceed ±2 V, Q7 is turned off, which turns off Q8 and the n...
The figure shows the automatic power protection circuit. The protector is composed of the buck rectifier circuit, overvoltage and undervoltage detectio...
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...
Description This is a small protection circuit from loudspeakers, from DC voltage that likely to exist after some damage in the power amplifier. If a D...
In this circuit, the MAX181 internal MUX forms a programmable-gain amplifier (PGA) with digitally-selected gains of 1, 2, 4, 8, 16, 32, 64, and 128. An...
The circuit in the first schematic is for a diamond protection circuit that used two transformer type DCC Block Occupancy Detectors.NOTE: if there is a...
Most of the over-current, overvoltage protection of the power supply will stop working after the power failure, the output will be zero, and then it ca...
An overvoltage protector circuit is shown in the schematic diagram below. This circuit will work to disconnect the protected device from the power supp...
When the voltage of the power supply is too high or the load attracts too much current, the circuit in the figure can break down the load and offer fau...
This circuit makes optimum use of economy transistors in discrete-component amplifiers that will operate safely under any usable load conditions, inclu...
When using a regulated power supply to reduce a supply voltage, there is always the danger that component failure in the power supply might lead to a s...
Circuit diagram People often forget that many voltage regulator ICs have an upper limit (usually 35 V) on the input voltage they can handle. That appli...
As shown in the 10-15, the protector circuit consists of AC hypotension, DC steady voltage circuit, undervoltage, overvoltage detection circuit and pow...
Addition of diodes D2 and D3 to modified Schmitt trigger having isolating diode D1 prevents reverse breakdown of emittor-base junction of Q1.-J. Gaon, ...
The chart shows a fridge over voltage, under voltage, power delay protector circuit. The circuit consists of over and under voltage sampling circuit, t...
The CMOS digital circuit used to produce a osicillator, with pulse low frequency frorm. We use R and C are a lot of period time. it must have a diode t...
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