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My laptop indicates Plugged in Charging but it is not charging the battery as Batterycare indicates 0W power flow to the battery i bought new battery thinking that it may be the battery's fault but in vain still same message. I can charge the battery in my dead M5010 laptop. the charger and...
Hello everyone, i am facing an issue with my laptop it lost its sound hardware. i opened up the laptop and found a blown SMD transistor (transistor because on board number mentions as Q3504 ). Now i cant read the number written on it to determine the type rest of the transistors on this I/O...
a 555 based circuit will be much better and you will have the luxury of varying the amount of light where you want to trigger the circuit with the help of simple variable resistor.
if you want to hide wires simply use wire labels it will reduce the cluttering.. you can also use terminals for input and outputs and label them as requires.
the code is required to identify weather ATS will operate automatically or manually.
now if Automatic button is pressed
it will check weather the AC input is low or not ....low when AC is avail and vice versa.
it will check weather generator is working or not ''''low when on and vice versa...
1. circuit is connected to the ground and body of the generator.
2. i am using digital input not analog but even then i did as you suggested and it didn't change any thing previously.
thank you all i got ride of 100 ohms resistor and put in 3 leds for the indication that MCU is in which part of the code i also added 47uF Capacitor before LM7805 and the circuit has started working. it worked fine today now i will burn the old firmware to see weather the System is working fine...
i wrote a new code very simple one i noticed that ic doesn't hang up but it some how shuts down the output ports without reason.
#include<REG51.h>
sbit ac=P3^7;
sbit gen=P3^6;
sbit sw=P0^4;
sbit ign=P0^3;
sbit del=P0^0;
int count=0;
void acok();
void noac();
void delay(unsigned int msec )
{...
the zener was from previous design where i used arduino uno as cpu but then i shifted to cheaper 89s51 and it can cause any issue as voltage is on .7 volts at VBE and transistor is working fine.
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