Search found 4 matches

by Artur
Sat Sep 27, 2008 4:03 pm
Forum: General Discussion
Topic: 1N457 need equivalent
Replies: 12
Views: 3815

Hi, this is a design I found online, I'm going to use it to charge a small lead acid battery non automotive the type used in hallway emergency lights. Here is the link http://www.electronics-project-design.c ... arger.html
by Artur
Sat Sep 27, 2008 7:26 am
Forum: General Discussion
Topic: 1N457 need equivalent
Replies: 12
Views: 3815

1N457 need equivalent

Hi guys, I can't seem to find this diode (1N457) or I have to buy a minimum of 150 pieces. I need it for a battery charger that I'm building, an equivalent diode would be great but I'm having trouble with that too. any help would be appreciated.
by Artur
Sun Aug 31, 2008 8:35 am
Forum: General Discussion
Topic: DC motor speed control using PWM
Replies: 4
Views: 1426

I have no idea how to write or modify a program in C or assembler so I'm looking for a circuit with the code included. I need a compact PWM circuit to run a small DC motor, the circuit will be installed in a locomotive and controlled remotely. you are saying that the cristal is not needed, how will ...
by Artur
Sat Aug 30, 2008 7:07 pm
Forum: General Discussion
Topic: DC motor speed control using PWM
Replies: 4
Views: 1426

DC motor speed control using PWM

Hi guys, I have a question regarding this circuit I found for a PWM speed control using a PIC16F876. The web site shows the whole schematic but it also has a source code, do I need to program the PIC16F876 with that source code in order to be able to use it in that circuit? here is the web page http...