Applications

Isolated current feed-back signal in Switch Mode Power Supplies • Motor current load/overload • Lighting • Switch Controls Ultra-sound current

• High resolution sonar current • Isolated bi-directional current sensor with full wave bridge rectifier

AS Series Current Sensors are designed as a low cost method of

controlling, monitoring or measuring AC currents. The sensors serve as

feedbackelementsbetweentheoutputandpulsecontrolcircuitryproviding

accurate regulation of switch mode power supplies.

AS Series • Current Sense Inductors & Transformers

Primary Sense Current

Notes:

1)

L

sec

: Secondary inductance tested at 10kHz and 10mV for 1:50 through 1:500

Prim./Sec. ratios and 1kHz/10mV for Prim./Sec. ratio of 1:750

2)

This nominal termination resistance value will yield approximately 1.0V

of output for each amp of current in a single turn sense line. The output

Voltage/Ampere of these devices can be increased or decreased linearly

over a restricted temperature range by adjusting the terminating resistance.

3)

For Prim./Sec. Ratios of 1:50 through 1:500, the I

sec

value corresponds to a

maximum primary current of 15 Amp-turns rms while the Isec value for the ratio of

1:750 corresponds to a max. primary current of 30 Amp-turns rms.

4)

VµS = R t x Is x

Rt (Ohms): Recommended Terminating Resistance

Is (A): Secondary Current

F (Hz): Frequency

5)

Operating Temperature Range: -40°C to +120°C

6)

Pin 2 is on Center-Tapped (CT) versions only

Electrical Specifications at 25°C

9.53

1

2

3

+

_

+

_

4 .0

20.4

12.7

0.45 x 0.66

17.0

(0.250)

1

2

3

TALEMA

ASXXX

5.0

6.35

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.

1

25

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5

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3

THE TALEMA GROUP

•

World Wide Toroidal Specialists

1

2F

1

3

1

2

3

Features

• Fully encapsulated for optimal PC board mounting

• Frequency range from 20kHz to 200kHz

• Primary current rating to 30 Amps

• Primary to secondary isolated to 2500 VAC

• Meets VDE norms

• Optimum performance over designated current and

frequencyrange

• Competitive pricing due to high volume production

• ManufacturedinanISO-9001:2000,TS-16949:2002

and ISO-14001:2004 certified facility

• Fully RoHS compliant

(06-06) AS Series