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Recently I purchase a china made Rechargeable LED emergency light which contains 1 6V5Ah battery. Upon inspection I find that the circuit board contains an SMPS + a transistor switch to control the light. The SMPS it contains is exactly the same as this .
The output voltage to charge the 6V...
Depending on a variety of variables, such as your server operating system, your hardware resources, and your site's performance requirements, you can configure your environment to support physically separate or logically separate servers
Re: Hi current from KA7905 & 2N3055
:) Actually I am using a 12V 2Amp smps as source of DC and regulating it using 7805/7905. Before buying a new 5V smps I thought "Why not make my own power supply". But seeing (or may I say feeling) the high dissipation, I now think it is wiser to buy a...
Re: Hi current from KA7905 & 2N3055
@pinout,
Before making this post, I tried 7805 with NPN 2N3055(7805 output on the base) and It worked as expected. Used a diode to overcome Vbe drop.
But, what is annoying me is the way 7905 is acting. I have tried both the following cases :-
1. The...
I am trying to make an (about) 1500mA 5V power supply for a D-Link DIR-300 wireless router.
I have a 12V 2amp smps which I am using as source of DC and using a KA7905 regulator and 2N3055 power transistor(I have them in my stock).
The regulator draws current through base-collector junction...
Re: adc0804 & 0808 readings going 0 after half the total voltage read through i/p cha
didn't you forget to make P0 as input?
your code
//ADC0804 CODE
#include<at89x52.h> //----Including the Reg file
//------------Assigning Control bits for LCD control---------/
sbit rs = P3^0; //----Pin0...
Thanks Very Very Much FvM for giving the clue. The physical size dimension of my capacitor matches with .01mfd caps as given in datasheet.
The problem is that triac is working. The motor recently giving a loud humming noise. Individually all parts except the capacitor of that control circuit...
Can anybody please help?
This is a Box type Metalized film capacitor. Color Black . Upon the capacitor written
El-Ci-Ar
KT 11
01 M 1KV-
No decimal point given. Is it .01mfd or 0.1mfd ? (No help from datasheet).
It is used in a circuit which is using a Triac to control a motor. The capacitor...
Can any body tell me what software is used to create the attached schematic? Please.
It would be helpful if you give names of software giving same result.
man009,
If you are from India, BPB Publications New Delhi publishes a good book containing circuit diagrams (showing voltages at major points ) of almost all major SMPS available in India. That may help you. It also covers common faults, how to test different sections etc.
And one thing, what...
The following link shows how to use an ULN 2083 (The eight NPN Darlington connected transistors array) with a PIC16F84A.
You will get the idea. Your ULN2003A consist of seven npn Darlington pairs.
https://www.edaboard.com/threads/231528/
you can use ULN 2003 for connecting seven relays or...
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