Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Can AC and DC voltages be on the same pcb ?

Status
Not open for further replies.

auto_mitch

Full Member level 3
Joined
Oct 14, 2004
Messages
172
Helped
16
Reputation
32
Reaction score
3
Trophy points
1,298
Activity points
1,238
AC and DC on a pcb

Hi everyone!
I have built a control unit with an mcu which drives a few relays. The relays's contacts control (ON/OFF) AC devices. The mcu and the relays (24 Vdc) are on the same pcb at the opposite direction. Is that normal, being DC and AC Voltages on the same pcb?
Thanx
 

rikie_rizza

Full Member level 6
Joined
Aug 5, 2006
Messages
339
Helped
29
Reputation
58
Reaction score
9
Trophy points
1,298
Location
Bikini Bottom, between a rock and a pineapple
Activity points
3,173
AC and DC on a pcb

Its alright as long as you isolate them properly. Use guard ring from DC supply ground to physically splitting the area. Relay is a good isolation device, there shouldn't be any disturbance, especially if you use relay controller circuit.
 

fsahmed

Member level 4
Joined
Sep 19, 2005
Messages
77
Helped
11
Reputation
22
Reaction score
1
Trophy points
1,288
Location
Belfort, France
Activity points
1,640
Re: AC and DC on a pcb

It would be advisable to keep AC and DC grounds separate
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top