Hall switch model commonly used in electro-hydraulic hammer

Brief introduction of unipolar switch:

The unipolar Hall effect switch has a magnetic operating threshold (Bop). If the magnetic flux density borne by the Hall element is greater than the working threshold, the output transistor will be turned on. When the magnetic flux density drops below the operating threshold (Brp), the transistor will turn off. Hysteresis (Bhys) is the difference between two thresholds (Bop-Brp). Even if there is external mechanical vibration and electrical noise, this built-in hysteresis page can realize the net switching of output. The digital output of unipolar Hall effect can be applied to various logic systems. These devices are very suitable for use with simple magnetic rods or rods. Allegro offers a variety of unipolar Hall effect switches, each of which

Hall unipolar switch models are as follows:

Category, brand, model, operating point (g), release point (g), return difference (g), operating voltage and operating temperature.

Unipolar hall switch AH AH3 144E

70 ~ 300 30 ~ 270 & gt30 4.5-24V -40-85℃

AH AH3 144L

70 ~ 300 30 ~ 270 & gt30 4.5-24V -40- 150℃

AH AH543

70 ~ 350 30 ~ 270 & gt30 4.5-24V -20-85℃

Diode ATS 137

70 ~ 300 30 ~ 270 & gt40 3.5-20 volts -40-85℃

YH YH 137

20 60~80 4.5-24V -20-85℃

YH YH3 144E

& gt30 20 3.8-24V -40-85℃

Allegro A 1 104EU-T

35 ~ 450 25 ~ 430 & gt20 3.8-24V -40-85℃

Allegro A 1 104LU-T

35 ~ 450 25 ~ 430 & gt20 3.8-24V -40- 150℃

Allegro A 1 104EUA-T

35 ~ 450 25 ~ 430 & gt20 3.8-24V -40-85℃

AH3 144E/L, Hall switch integrated circuit is a magnetic induction circuit based on Hall effect principle and made of semiconductor integrated technology. It is a magnetic induction circuit composed of voltage regulator, Hall voltage generator, differential amplifier, Schmitt trigger, temperature compensation circuit and open collector output stage. Its input is magnetic induction intensity, and its output is digital voltage signal.

Product characteristics

Small size, high sensitivity, fast response, good temperature performance, high precision and high reliability.

Typical application

Contactless switch, automobile igniter, braking circuit, position and speed detection and control, safety alarm device, textile control system.

Unipolar hall switch a 1 104eu-t

Detailed description: supplied separately: unipolar hall: AH44AH44LAH 443AH201ATS137AH543S3144S137.

Hall element A04E detailed description:

Allegro imported from the United States, the real model is A 1 104. Can replace the discontinued A3 144, made in China.

Unipolar hall: ah44e ah44l ah443ah201ATS137ah543s3144.

S 137 A3 144 A04E

137 hall switch circuit consists of reverse voltage protector, voltage regulator, hall voltage generator, differential amplifier, Schmidt trigger and open collector output stage, which can convert the changing magnetic field signal into digital voltage for output.

Bipolar hall switch

Brief introduction of bipolar switch:

Bipolar Hall effect switches are usually turned on when the magnetic field strength in the South Pole is large enough, and turned off when the magnetic field strength in the North Pole is large enough. However, if the magnetic field is removed, the output state will not be defined. Some bipolar Hall effect switches will change the output state, while others will not. These Hall effect switches can be magnetically driven by alternating north-south magnetic fields and multipole ring magnets.

Introduction to Locking Hall:

When the magnetic field intensity in the south pole is large enough, the Hall effect digital latch will always be open, while when the magnetic field intensity in the north pole is large enough, the Hall effect digital latch will be closed. If the magnetic field is removed, the output will not change. To change the output state, the opposite magnetic field polarity must be applied. Allegro provides various latching Hall effect switches, each of which has a different operating threshold (Bop) related to the south pole of the magnet and a release threshold (Brp) related to the north pole of the magnet.

Category, brand, model, operating point (g), release point (g), return difference (g), operating voltage and operating temperature.

AH AH5 12

-60 & gt； 20 4.5-24V -40- 125℃

AH AH5 13

20 ~ 60-60 ~ 20 & gt； 40 4.5-24V -40- 150℃

Ah, AH72S

-200 & gt； 40 4.5-24V -25- 1 10℃

AH AH4 13

- 100 >20 4.5-24V -40- 150℃

AH AH 4 1 1 45-45 90 4.5-24V-40- 150℃

Diode AH 173

15 ~ 60-60 ~- 15 80 3-20V-40- 125℃

Diode AH 175

15 ~ 60-60 ~- 15 30 ~ 120 3.5-20V-40- 150℃

Diode ATS 177

5~70 -70~-5 80 3.5-20V -20-85℃

YH YH732

-70 & gt； 40 4.5-24V -40-85℃

YH YH4 1

-60 80 3.5-20 volts -40- 150℃

Bipolar hall switch

AKE EW632

-60 60 2.2- 18V-30- 1 15℃

AKE EW5 12

10 ~ 60-60 ~- 10 60 4.5- 18V-30- 1 15℃

AKE EW732

-60 60 2.2- 18V-30- 1 15℃

Honeywell SS 411A 60-60123.8-30V-40-150℃

Honeywell SS 413A140-140 203.8-30V-40-150℃

MELEXIS us 188 1---4.5-24V-40- 150℃

S4 1 Hall switch circuit is most suitable for responding to the magnetic field with steep bending slope, and it is suitable for working with bipolar or multiple pairs of magnetic rings when the magnetic flux density is weak. It consists of a reverse voltage protector, a voltage regulator, a Hall voltage generator, a signal amplifier, a Schmidt trigger and a open collector output stage. The working temperature range is -40~ 150℃ (storage temperature is 150℃).

Product characteristics

Wide supply voltage range

It can be driven by a small magnetic ring on the market.

No moving parts, high reliability

Small size

Environmental stress resistance

Dual direct interface with bipolar and MOS logic circuits

Typical application

High sensitivity contactless switch

DC brushless motor DC

Brushless fan

contactless switch

The 732 Hall switch circuit is most suitable for responding to the magnetic field with steep change slope, and is used in the occasion with weak magnetic flux density. It consists of reverse voltage protector, voltage regulator, Hall voltage generator, signal amplifier, Schmidt trigger and output stage with current collection and open circuit.

Mr. Li Shiran of Shenzhen Yu Hui Mei Technology Co., Ltd.15920051790QQ1073750252

Linear hall switch

49E linear Hall position sensor is a small package and integrated multifunctional linear Hall sensor, which can work reliably in the magnetic field of permanent magnets or electromagnets. Under a certain working voltage, its output voltage varies linearly in direct proportion to the magnetic field strength. The unique low noise output of integrated circuit makes it unnecessary to use external filter circuit. Its working temperature range is -40~ 100℃, which is suitable for commercial, consumption and industrial control environment.

It can replace SS49E, and is mainly used in electric bicycle speed regulation, motor train speed regulation, current detection sensor, proximity detector, motion detector, gear sensor, motor control, rotary encoder, ferrous metal detector and liquid level sensor.

S49E and AH49E linear Hall circuits are composed of voltage regulator, Hall voltage generator, linear amplifier and emitter follower. Its input is magnetic induction intensity, and its output is voltage proportional to the input. The static output voltage (B=0GS) is half of the power supply voltage. When the S-pole appears on the marking surface of the Hall sensor, the driving output will be higher than zero level. N poles will drive the output below zero level; The instantaneous and proportional output voltage level determines the magnetic flux density of the most sensitive surface of the equipment.

Product features: small size, high precision, high sensitivity, good linearity, good temperature stability and high reliability.

Typical applications: motion detector, gear sensor, proximity detector, current sensor, electric bicycle governor and other applications to detect magnetic fields.

Micro-power Hall element (4913/3144/137/276/277/41)

49 13 is a nonpolar hall switch based on mixed-signal CMOS technology. The integrated circuit adopts advanced chopper stabilization technology, which can provide accurate and stable magnetic switching points.

In circuit design, 49 13 provides a controlled clock mechanism, which provides clock sources for Hall elements and analog signal processing circuits. At the same time, this controlled clock mechanism can send out control signals, so that circuits with high current consumption can enter the "sleep" mode periodically. At the same time, through this mechanism, the chip is periodically "awakened" and the magnetic field intensity passing through the Hall element is detected according to the preset magnetic field intensity threshold.

If the magnetic flux density is higher than the threshold of "operating point" or lower than the threshold of "release point", the open-drain output transistor is driven and locked in the corresponding state. During "sleep", the output transistor is locked in its previous state. This design provides the best support for extending the working life of battery-powered applications.

148 is a nonpolar hall switch based on mixed-signal CMOS technology. The integrated circuit adopts advanced chopper stabilization technology, which can provide accurate and stable magnetic switching points.

In circuit design, 148 provides a controlled clock mechanism, which provides a clock source for Hall elements and analog signal processing circuits. At the same time, this controlled clock mechanism can send out control signals, so that circuits with high current consumption can periodically enter the "sleep" mode; At the same time, through this mechanism, the chip is periodically "awakened" and the magnetic field intensity passing through the Hall element is detected according to the predetermined magnetic field intensity threshold. If the magnetic flux density is higher than the "operating point" threshold or lower than the "release point" threshold, the open-drain output transistor is driven and locked in the corresponding state. During "sleep", the output transistor is locked in its previous state. In battery-powered applications, this design can extend the working life most.

The working principle of 44e is: Input voltage Uc at (1) and (2) terminals, which is stabilized by voltage regulator and then applied to both ends of Hall plate. According to the principle of Hall effect, when the Hall plate is in a magnetic field, the Hall potential generator will output a Hall voltage, UH, which will be amplified by the amplifier and sent to the Schmidt trigger for shaping. When the applied magnetic field reaches the operating point of the device, the Schmidt circuit will flip to make the OC gate.

Uses: speed detection, position detection; Zero switch of moving platform.

Features:

L simple structure, plastic shell, small volume,

I need a small magnet to match it;

L switching element, open collector output;

L no contact, long service life;

L fast switching speed and wide working frequency band (DC ~100 khz);

OH49E is a small multifunctional linear hall. Its input is magnetic induction intensity and its output is sum input.

The voltage is proportional. The static output voltage (B=0GS) is half of the power supply voltage. The S-pole appears on the Hall sensor mark.

Surface, the driving output is higher than zero level; The N pole will drive the output below zero level. The integrated circuit has a low noise output,

This makes it unnecessary to use external filtering. It also includes precision resistors to provide higher temperature stability and accuracy.

Product characteristics

Small size? Single current source output

Low noise output? Both positive and negative magnetic fields can be induced.

The power consumption is 3.5 mA at VCC=5V.

The working temperature range is -40℃ to 85℃

CS49E series linear Hall circuit consists of voltage regulator, Hall voltage generator, linear amplifier and emitter follower. Its input is magnetic induction intensity, and its output is voltage proportional to the input.

Product characteristics

Small size and high precision

High sensitivity and good linearity.

Good temperature stability and high reliability.

Typical application

Motion detector. Gear sensor

Short-range detector. Current detection sensor

. Electric bicycle governor

Linear Hall means: under static state (no magnetic field), theoretically, the output should be equal to half of the power supply voltage within the working voltage and temperature range. Increasing the magnetic field of the South Pole will increase its static voltage. On the contrary, increasing the magnetic field of the North Pole will increase its static voltage. These components can measure the angle, proximity, motion and magnetic flux of current. They can reflect mechanical events in a magnetically driven way.

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