In the ringing current-limit switching power supply, the output current Io has no corresponding relationship with the primary stage current Ic. For the...
Thermal relay overload protection circuit can be applied to avoid the failure, which is as shown. FT is the thermal relay in the string for the circuit...
This article describes the Discrete Overvoltage Protector for Automotive Application (FMMT718). The content is very simple, very helpful. Components in...
This circuit detects low-voltage supply conditions, down to 0.6 V. D1 sets the trip point of the circuit. The circuit is useful to protect memory circu...
The computer protection circuit is shown in the picture. There are bipolar transient voltage suppression diodes VD1-VD4 connecting with the interface c...
As shown in the figure is the eyesight protection timing circuit. This circuit uses 555 , R2, R3, R4 and C3 to constitute a pulser of variable duty rat...
In the Figure, K is a power switch, T1 is the controlling small power transformer, T2 is the amplifier power transformer. IC1 (S1-S4) is the four - way...
Series regulator with degenerative feedback provides both overload and short-circuit protection. Output voltage is automatically restored when over loa...
This modem/fax protector can be used in telephone-line connections between aPC or a terminal and a distant computer. In this circuit, the SVPs (surge v...
Integrated regulated power supply with overvoltage protection composed of three terminal adjustable negative output voltage integrated regulator CW137....
This article describes the Electronic Fuse for DC Short Circuit Protection (C106). The principle is very simple, very practical. The circuit components...
The circuit is as shown, press the start button ST to lead the KM pulls. Then the motor M runs into normal operation. At this moment, three-phase load ...
As the figure 15-10 shows, the protector is composed of the finger touching monostable circuit, the music circuit, the control circuit and the step-dow...
Uses signal from Q1 to trigger SCR1, which turns off series-pass transistor when overload reaches 15 amp. Will also provide limiting of output voltage ...
The pictrue shows the over-voltage protection circuit by using the principle of over-heat generated by over-voltage....
The circuit is designed to drive an external load. A fault condition in the external load circuit could feed excessive current or voltage back into the...
As the figure 16-5 shows, the protector is composed of the reading time limit reminder and the reading environment metering device, and it can be used ...
This article introduces the logic circuit diagram and overvoltage protection institution. The circuit is very simple, very cheap, but it is very effect...
The chart shows the automatic refrigerator protection circuit. The protection is composed of the step-down circuit, undervoltage and overvoltage contro...
The circuit is based on 555, which has the virtues of small size, low cost and reliable time delay. The circuit consists of step-down rectifier circuit...
Reasons for grid's overvoltage:1. Static electricity on the grid capacitance cancause overvoltage.2. Capacitance mueller effect causes grid overvoltage...
The circuit shown as the chart is the five functional refrigerator protection circuit. The protection is composed of the time base signal generator, po...
The analog- digital converter DAC-08 output terminal in circuit shown as the chart is connected DC input voltage to constitute typical analog - digital...
The most simple polarity protection tehnique is to connect a series diode to the power line input. The diode conducts only when the power supply protec...
As the figure 15-7 shows, the protector circuit is composed of the DC voltage-stabilizing circuit, the delay circuit, the over-voltage under-voltage pr...
The circuit of the device is shown in Figure 1, which consists of VDR MY and the dual-way SCR VS. The main function of MY is to absorb the flooding wav...
Figures 2-2 and 2-3 show a typical application circuit and pin configurations, respectively, for the MAX368/69，Figures 2-4 and 2-5 show the logic tru...
As shown in the figure 10-7, the protector is composed of transformer, preamplifier stage and monostable delay circuit and relay. The protection action...
Thermal protection is very important in many power systems. Figure 1 shows a low-cost thermal protection circuit. LTC1998 is used for 6-pin battery mon...
When the power grids have electricity, the comparator U1's + side is referenced voltage 6.9V, if the battery voltage become lower, the u1 would output ...
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