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  • Electronic Fuse for DC Short Circuit Protection

    2016-09-15 02:32:3461

    This circuit will protect your power supply or battery. The electric current will stopped by relay when electric current short occured, Relays must be ...

  • BQ2058T charging and discharging protection device circuit

    2016-09-15 02:11:4761

    BQ2058 and BQ2058T / X are specifically for the series combination of lithium-ion battery. In the circuit, BQ2058T can achieve the connection of two li...

  • Multi-purpose household protection circuit composed of the C

    2016-09-15 01:04:0160

    Delayed protection circuit is mainly composed of the charge and discharge loop (R6, C5), YF1 and the RS flip-flop, relay J3, driver circuit (BG2, BG3) ...

  • Logic PSU with Overvoltage Protection

    2016-09-15 00:04:2760

    Description: A simple 5 Volt regulated PSU featuring overvoltage protection. Notes The 5 volt regulated power supply for TTL and 74LS series integrated...

  • Three-Point Protection Circuit

    2016-09-15 00:03:5860

    The three-point protection circuit is shown in the picture. When there is a surge voltage flowing into the circuit, the gas discharge tube would guide ...

  • the circuit of loss-of-phase protecting relay for electric m

    2016-09-14 23:39:1859

    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...

  • OVERLOAD_PROTECTION

    2016-09-14 23:06:5660

    Protection circuit detects excessive load current and reduces output voltage proportionately. Values shown limit output current to 530 ma for short-cir...

  • Speaker Protection Circuit

    2016-09-14 22:27:3661

    Speaker Protection Circuit The circuit protection output of power amplifiers and loudspeakers, dispose certain interesting elements, as the isolation o...

  • Using LM317 Overvoltage Protection

    2016-09-14 20:41:3066

    This article explains the use of the LM317 overvoltage protection circuit. The circuit is simple but effective. For your more thorough grasp of this pr...

  • Op amp power supply voltage polarity reverse protection circ

    2016-09-14 20:28:4162

    The protection circuit of the op amp power supply reverse polarity is shown in figure (a), (b). Figure (a) is protection circuit of the single-stage am...

  • The household appliance over-voltage protector circuit

    2016-09-14 19:52:1860

    The working principle of the device circuit is shown in figure 1. After the AC mains is stepped down and limited by capacitor C1, it is then rectified ...

  • Step_down_regulator_with_short_circuit_protection

    2016-09-14 18:41:1462

    With this circuit, the low-battery detector (LBD) is connected to sense the output voltage, and shuts off the oscillator by forcing pin 2 low if the ou...

  • MC33035 over-current protection circuit diagram

    2016-09-14 17:12:2161

    MC33035 overcurrent protection circuit is shown as the chart. MC33035 uses the external inverter to be grounded by resistor RS for the current sampling...

  • ZERO_POINT_WITH_OVERVOLTAGE_PROTECTION

    2016-09-14 16:46:4360

    Used to protect voltage-sensitive load from excessive line voltage Switch section operates conventionally to turn on triac almost immediately after eac...

  • Simple and practical TV lightning prevention protection circ

    2016-09-14 14:17:4560

    The application circuit of this device is as shown in the figure. When you are watching TV in the thunderstorm day, the thunder can damage the TV throu...

  • Speaker protector

    2016-09-14 13:46:3563

    Description. When the amplifier is switched on, the speaker gets popped up by a high voltage and you can hear a loud thud sound from the speaker. This ...

  • 555 automatic start type over-current protection control cir

    2016-09-14 13:07:2060

    As shown in the figure 10-10, the over-current protection circuit is made as the core of 555 which is connected into R-S trigger mode. In the figure, M...

  • PC_PASSWORD_PROTECTION

    2016-09-14 11:41:4060

    With this circuit, a PC will be protected, requiring a password to boot. After three times, the computer will have to have a cold reboot and the passwo...

  • Power supply over voltage detection and time delay protectio

    2016-09-14 11:22:3260

    For some electrical equipments, the operating supply voltage range is strictly limited. Over-voltage or under-voltage will affect the work or even dama...

  • Overload protection circuit

    2016-09-14 11:20:2661

    Generally the level of a signal that departs output of sound signal generator the all. The that get fix have standard same score be 1Vrms. But in now a...

  • Transceiver Saver (Overvoltage Protector)

    2016-09-14 10:58:5260

    This is a transceiver saver circuit that protect a transceiver device (applicable to other device as well) from overvoltage of the power supply. This c...

  • Automotive Braking Air Under Pressure Protector Two

    2016-09-14 10:09:5560

    Work of the circuitThe circuit consists of air pressure sensor SPl, oil pressure sensor SP2, auto ignition switch Sl, clutch switch S2, buzzer HA, rela...

  • Polarity protection circuit

    2016-09-14 08:11:4761

    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...

  • The high voltage code protection alarm circuit

    2016-09-14 07:57:4960

    In the circuit is the high voltage code protection alarm circuit. The alarm uses resistance code to recognize the true or false, so it can be used to t...

  • Thermal relay overload protection circuit

    2016-09-14 07:57:4760

    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...

  • SIMPLE_MOBILE_RADIO_PROTECTOR

    2016-09-14 06:27:0260

    This circuit supplies power to a mobile radio only when the ignition is on and has a delay feature to prevent energizing the radio until the key has be...

  • Logic circuit diagram and overvoltage protection institution

    2016-09-14 02:38:5860

    This article introduces the logic circuit diagram and overvoltage protection institution. The circuit is very simple, very cheap, but it is very effect...

  • Brownout Detector/ Protector (MC14053BFG)

    2016-09-13 22:21:2560

    This article describes the Brownout Detector / Protector (MC14053BFG). The content is very simple, very helpful. Components in this article can help yo...

  • 555 simple refrigerator protection circuit

    2016-09-13 20:16:4660

    The circuit is shown in Figure 13-5, the protection is mainly used for power delay protection to avoid the compressor from frequent start, and mechanic...

  • COMPLETE_GTO_PROTECTION_FOR_D_C_SUPPLY

    2016-09-13 19:52:5660

    Circuit includes required recycle pulse generator and Schmitt trigger for driving gate-turnoff scr (gto) that switches off d-c power supply within 30 m...

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