Electronics Forum

Electronics Circuits & Projects discussion forum. Get help with electronics.


Optocoupler circuit help

Discuss about electronic circuits here. Request help for circuits that you couldn't find anywhere else, how a circuit works etc. Discuss anything related to electronic circuits.

Moderator: pebe

Optocoupler circuit help

Postby jerryrp » Fri Feb 13, 2015 8:32 pm

I have a field device that uses normally open switches that has an optocoupler for each of the inputs for isolation. The field device is powered by a 3.3 VDC lithium battery. The other portion of the circuit also is tied to a 24volt DC power supply to drive a bulb. The commons of the battery and the power supply are tied together.

My issue that I'm having is that I have a 6 of these that are driving six lamps and it seems that I'm getting a power surge that turns on all 6 of these devices. I think it might have something to do with commons tied together and fluctuating the ground high and turning on the optocoupler and activating my lamps.

Attached is the major portion of the circuit.
Image
jerryrp
 
Posts: 1
Joined: Fri Feb 13, 2015 8:10 pm

Re: Optocoupler circuit help

Postby KMoffett » Sat Feb 14, 2015 11:44 am

Where are the lamps and the 24V supply in your circuit?

Ken
KMoffett
 
Posts: 189
Joined: Sun Apr 13, 2014 3:41 pm
Location: Minnesota USA


Return to Electronic Circuits Help



Who is online

Users browsing this forum: No registered users and 3 guests

RCA 218821 I.C. EEPROM DNB SK 458320P
$25.0
RCA 218821 I.C. EEPROM DNB SK 458320P pictureSiemens Simatic S7-200 16K EEPROM MC 6ES7 291-86000-0xa0
$10.0
Siemens Simatic S7-200 16K EEPROM MC 6ES7 291-86000-0xa0 picture1pcs NEW 28EC20 DS28EC20 TO-92 20Kb Serial EEPROM Operates from Single-Contact 1
$4.9
1pcs NEW 28EC20 DS28EC20 TO-92 20Kb Serial EEPROM Operates from Single-Contact 1 pictureLOT OF 26 PCS. ATMEL AT93C46EN-SH-B IC EEPROM 1KBIT 2MHZ 8SOIC
$15.0
LOT OF 26 PCS. ATMEL AT93C46EN-SH-B IC EEPROM 1KBIT 2MHZ 8SOIC picture


cron