CN204241539U - A kind of electricity isolation module circuit - Google Patents

Abstract

The utility model discloses a kind of electricity isolation module circuit, its key is: described electricity isolation module circuit comprises Hall voltage sensor T1, and its 3 end is connected with resistance R10 with electric capacity C8, resistance R9 respectively: the other end common ground of electric capacity C8 and resistance R9; 3 ends of the other end concatenation operation amplifier U1 of resistance R10; One end of the 2 ends difference contact resistance R11 and resistance R12 of U1; The other end of resistance R12 connects 6 ends of U1, and the other end of resistance R11 connects 1 end of bilateral diode D6; 6 ends of U1 also resistance R13 connect electric capacity C10, D6 and protective tube F6 respectively; The other end ground connection of electric capacity C10.The utility model can isolate the collection of alternating current, voltage signal; Larger ac voltage signal can also be become less d. c. voltage signal with ac current signal isolation processing; Its structure and principle are very simple, cheap for manufacturing cost, have very strong practical value.

Description

A power isolation module circuit

technical field

    The utility model relates to a power isolation module circuit.

Background technique

The power isolator is a small-volume, high-performance power test component (product) developed for power detection (monitoring) in engineering and improving the overall anti-interference ability of the system. The power isolator is used to isolate, measure and transform the electrical parameters such as large current, high voltage, power, frequency, phase angle, and electric degree on site, and can also isolate and amplify various weak signals (such as various bridge signals). After conditioning, it is transformed into analog signals such as voltage, current, and frequency in line with international general standards, or transformed into digital quantities, switch state and other signal outputs. These output signals can be connected with traditional pointer instruments, and can also be directly connected with modern digital automatic control instruments, various A/D converters and computer systems, so that a highly reliable industrial detection (monitoring) or control can be formed. system.

Utility model content

The purpose of this utility model is to provide a power isolation module circuit.

In order to achieve the above object, the following technical solution is adopted: an electrical isolation module circuit, characterized in that: the electrical isolation module circuit includes a Hall voltage sensor T1, and 1 end of the Hall voltage sensor T1 is connected to the IIN-port, and the Hall voltage sensor T1 is connected to the IIN-port. Terminal 4 of the Hall voltage sensor T1 is connected to the IIN+ port, terminal 2 of the Hall voltage sensor T1 is connected to the -12V power supply terminal, terminal 5 of the Hall voltage sensor T1 is connected to the +12V power supply terminal, and terminal 3 of the Hall voltage sensor T1 is connected to the capacitor One end of C8, resistor R9 and resistor R10 is connected: the other end of the capacitor C8 and the resistor R9 are commonly grounded; the other end of the resistor R10 is connected to the 3-terminal of the operational amplifier U1; the 1-terminal and 8-terminal of the operational amplifier U1 are vacant, and the operational amplifier Terminal 4 of U1 is connected to -12V power terminal, terminal 7 of operational amplifier U1 is connected to terminal of +12V power supply, terminal 2 of operational amplifier U1 is connected to one terminal of resistor R11 and resistor R12 respectively; the other terminal of resistor R12 is connected to terminal 6 of operational amplifier U1 , the other end of the resistor R11 is connected to end 1 of the bidirectional diode D6; the 6 ends of the operational amplifier U1 are connected to the resistor R13 respectively to the capacitor C10, the 2 ends of the bidirectional diode D6 and one end of the fuse F6; the other end of the capacitor C10 is grounded; The other end of the fuse F6 is connected to the Iout end.

The power isolation module circuit uses a wide voltage DC 6-36V power supply to power it, and it can work normally.

In the utility model, the primary and secondary stages of the Hall voltage sensor T1 are insulated, which can be used to isolate the collection of AC current and voltage signals; at the same time, it can also isolate and process larger AC voltage signals and AC current signals into relatively Small DC voltage signal; its structure and principle are very simple, the manufacturing cost is low, and it has strong practical value.

Description of drawings

Fig. 1 is the circuit structure diagram of the utility model embodiment.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

As shown in Figure 1, a power isolation module circuit includes a Hall voltage sensor T1, the first end of the Hall voltage sensor T1 is connected to the IIN- port, the fourth end of the Hall voltage sensor T1 is connected to the IIN+ port, and the Hall voltage Terminal 2 of the sensor T1 is connected to the -12V power supply terminal, terminal 5 of the Hall voltage sensor T1 is connected to the +12V power supply terminal, and terminal 3 of the Hall voltage sensor T1 is respectively connected to one end of the capacitor C8, resistor R9 and resistor R10: the capacitor C8 and the other end of resistor R9 are commonly grounded; the other end of resistor R10 is connected to terminal 3 of operational amplifier U1; terminal 1 and terminal 8 of operational amplifier U1 are vacant, terminal 4 of operational amplifier U1 is connected to the -12V power supply terminal, and the terminal of operational amplifier U1 The 7 terminal is connected to the +12V power supply terminal, the 2 terminals of the operational amplifier U1 are connected to one terminal of the resistor R11 and the resistor R12 respectively; the other terminal of the resistor R12 is connected to the 6 terminal of the operational amplifier U1, and the other terminal of the resistor R11 is connected to the 1 terminal of the bidirectional diode D6; The 6 ends of the operational amplifier U1 are also connected to the resistor R13 of the capacitor C10, the 2 ends of the bidirectional diode D6 and one end of the fuse F6; the other end of the capacitor C10 is grounded; the other end of the fuse F6 is connected to the Iout end.

The power isolation module circuit can work normally by using a wide voltage DC 6-36V power supply to supply power to it.

The model of the Hall voltage sensor is HV20-P, and the model of the operational amplifier is OP07.

In the utility model, the primary and secondary stages of the Hall voltage sensor T1 are insulated, which can be used to isolate the collection of AC current and voltage signals; at the same time, it can also isolate and process larger AC voltage signals and AC current signals into relatively Small DC voltage signal; its structure and principle are very simple, the manufacturing cost is low, and it has strong practical value.

Claims (2)

1. A power isolation module circuit, characterized in that: the power isolation module circuit includes a Hall voltage sensor T1, the 1 end of the Hall voltage sensor T1 is connected to the IIN-port, and the 4 ends of the Hall voltage sensor T1 are connected to IIN+ port, the 2 terminals of the Hall voltage sensor T1 are connected to the -12V power supply terminal, the 5 terminals of the Hall voltage sensor T1 are connected to the +12V power supply terminal, the 3 terminals of the Hall voltage sensor T1 are respectively connected to the capacitor C8, the resistor R9 and the resistor R10 One end is connected: the other end of the capacitor C8 and the resistor R9 are commonly grounded; the other end of the resistor R10 is connected to the 3-terminal of the operational amplifier U1; the 1-terminal and 8-terminal of the operational amplifier U1 are vacant, and the 4-terminal of the operational amplifier U1 is connected to the -12V power supply Terminal 7 of the operational amplifier U1 is connected to the +12V power supply terminal, and terminal 2 of the operational amplifier U1 is connected to one end of the resistor R11 and resistor R12 respectively; the other end of the resistor R12 is connected to the terminal 6 of the operational amplifier U1, and the other end of the resistor R11 is connected to the bidirectional 1 end of the diode D6; the 6 ends of the operational amplifier U1 are also connected to the resistor R13 of the capacitor C10, the 2 ends of the bidirectional diode D6 and one end of the fuse F6; the other end of the capacitor C10 is grounded; the other end of the fuse F6 is connected to Iout end. 2. The electrical isolation module circuit according to claim 1, wherein the electrical isolation module circuit is powered by a wide voltage DC 6-36V power supply.