Continue to Site

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.

Offline SMPS ..scope the Primary post rectifier bus

Status
Not open for further replies.

cupoftea

Advanced Member level 5
Joined
Jun 13, 2021
Messages
2,773
Helped
54
Reputation
108
Reaction score
119
Trophy points
63
Activity points
14,658
Hi,
You know when you have cheap diff probes, and you scope the primary post rectifier bus of a PFC stage which stops switching for 2ms dead time around the zero crossing...and the leakage current through the diff probe makes the DC bus looks like its holding up in the "valley" when it isnt. (the "valleys" which occur every 10ms).....how do you get round this without buying an expensive diff probe?....i always float the scope and put a 100:1 on it, but i am not allowed to do that here.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top