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.

SIM800L power supply?

Status
Not open for further replies.

zip

Junior Member level 3
Joined
Jun 8, 2010
Messages
25
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,467
Hi all,

I would like to power SIM800L with 4.0V as it is put in hardware documentation.
Power supply is stepdown module 12V to 5V.
I suppose just putting voltage divider wouldn't work good.
Has anyone done something similar?



**broken link removed**
 

You could use a zener diode or just a regular diode with VF of 1V. just remeber VFxI = diode power wasted. if its more than 1-2W you are going to have some problems.
 

Thanks for helping out.
What does it mean , I will have problems?
Why is diode better approach then voltage divider?
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top