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.

How to design a DC block circuit

Status
Not open for further replies.

Sattek

Newbie level 3
Joined
Jan 10, 2020
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
20
I repair Satellite receivers and I often need to block the DC voltage on the IF line to do the repair . I need to block 13-18 Volts between 900mhz and 2Ghz while obviously letting the AC signal pass. If anyone can suggest a simple circuit I would greatly appreciate it.
 

I have a bit curious, why do you need to block DC on IF line ?
IF line in satellite receiver is on feeder, right? which repair method do you apply without DC voltage ?
 

Hi,

The usual way to block DC is a capacitor, connected in series.

Klaus
 

I repair Satellite receivers and I often need to block the DC voltage on the IF line to do the repair . I need to block 13-18 Volts between 900mhz and 2Ghz while obviously letting the AC signal pass. If anyone can suggest a simple circuit I would greatly appreciate it.

I forgot to mention that the circuit impedance is 75 ohm.
 

Hi,

You may calculate the impedance ...

Klaus
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top