help on voltage isolator

• Apr 12, 2009

• #1

alec82

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voltage isolator

hi guys
i need to make voltage isolator via optocopler .
anybody have idea to do that?
appreciate in advance

 

• Apr 13, 2009

• #2

V

venix

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hcpl7510 application notes schematic examples

Hello!

Look at the following datasheets.You will find the circuit you need for and also the schematic.

**broken link removed**

Best regards!
Venix

 

• Apr 13, 2009

• #3

alec82

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il300 isolator

hello
i want to isolate a signal that varied from 0 to 5 volt ? how i can do this?
regards

 

• Apr 13, 2009

• #4

FvM

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volt isolators

Vishay IL300 with a feedback circuit as suggested in the datasheet can do.

 

• May 15, 2009

• #5

H

hakeen

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hcpl 7520 schematics

Or you can use a voltage sensor optocoupler like HCPL-7510/7520

The input range can be adjusted to +-320mV with resistor bridge. Output is given with a good linearity.

Cheers
Hakeen

 

• May 16, 2009

• #6

smxx

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voltage isolator 4

Hi
at 1st you need to convert the signal to Pulse by VCO,then use an OPTO coupler,and again convert the OPTO coupler OUTPUT pulse to voltage.
THere is many prefab circuit for this purpose.

 

• May 16, 2009

• #7

K

kender

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iso4 opto

Look-up LOC110 made by Clare. It will need feedback amplifiers. The datasheet for the chip has good application circuits. Keep in mind that most linear optocouplers have a limited bandwidth. I have not seen a linear optocoupler with BW > 200kHz. What kind of signal do you want to isolate? What's you application, if it's not a secret?

 

• May 16, 2009

• #8

alec82

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induction isolator

hi friends
i'm going to use voltage isolator(actually signal isolator ) for sensing output voltage and current in smps circuits that have different ground .
i'm using pic mcu as controller and i want to isolate input analog signals.
best regards .

 

• May 18, 2009

• #9

sunyuan

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voltage isolator 12 volt

Hi, you don't have to do it yourself.
Sunyuan ISO A(U)-P-O or ISO 4-20mA series will do. They have been making this part for years and you can count on them. Small, precise and inexpensive.

Check
**broken link removed**

**broken link removed**

 

• May 22, 2009

• #10

alec82

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linear optocoupler isolator

dear sunyuan
above link is dead
r u sure the link typed correctly?
regards

sunyuan said:

Hi, you don't have to do it yourself.
Sunyuan ISO A(U)-P-O or ISO 4-20mA series will do. They have been making this part for years and you can count on them. Small, precise and inexpensive.

Check
**broken link removed**

**broken link removed**

Click to expand...

 

• May 22, 2009

• #11

Awarapunshee

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hcpl-7520 schematics

Following may help you:

https://www.smps.us/12volt-powersupply.html

ENJOY!

 

• May 27, 2009

• #12

H

hakeen

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hcpl7510 as voltage isolator

Hi

This is what I used in the past. Just resistor bridge, with one of them is shunt for isolation amplifier.

Hope it helps

 

• May 29, 2009

• #13

D

darling67

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diy linear optocoupler circuit

Most often questions of concern arise to anyone associated with the use of any communication signal via a metallic or fiber optic cable. Providers of telecommunications, electric service, wireless service or CATV, or operating in an isolated manufacturing or mining location, may be working in a hostile electric environment. An unprotected or improperly protected system is unsafe for the public and personnel, and exposes equipment to service interruptions or permanent damage.

 

• Jun 6, 2009

• #14

alec82

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hcpl 7510 application bandwidth forum

dear friends
anybody knows anythings about induction isolator ?
best regards