Hobby Electronics Basics

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trouble with logic counters

Hello, I'm trying to hook up a 74HCT163 to count from 0 to 7 then loop and keep doing it. I'm having a lot of trouble m...
2 comments posted 19yrs
posted by panfilero
2 comments posted 19yrs posted by panfilero

Reg - rechargeable batteries

How to calculate the required rechargeable battery specifcation( Lithium ).I want to use in UPS for my Colour televison...
9 comments posted 19yrs
posted by karthik_eeeng
9 comments posted 19yrs posted by karthik_eeeng

6vdc from 12vdc supply

I'm using a 12vdc power supply to drive 2 octal base relays. Is there any reason I couldn't use a simple voltage divide...
3 comments posted 19yrs
posted by djdieterle
3 comments posted 19yrs posted by djdieterle

Expert?

They say consult an expert before trying something dangerous. What expert? How did the become expert? Who was the first...
14 comments posted 19yrs
posted by roddy9
14 comments posted 19yrs posted by roddy9

PIC18 - eeprom write

This is my first attempt to write to eeprom using a pic18f2455. Obviously it isn't working. ;) Most of it is straight o...
6 comments posted 19yrs
posted by randy.day
6 comments posted 19yrs posted by randy.day

Will IR Illuminator work with any CCD Camera?

I want to setup some night surveillance cameras. I notice that some CCD night cameras have the IR LEDS right on the cam...
31 comments posted 19yrs
posted by wdoe999
31 comments posted 19yrs posted by wdoe999

need help!

hello all, i need help regarding designing the output stage of a two-stage differential amplifier that has the constrai...
0 comments posted 19yrs
posted by mofattal
0 comments posted 19yrs posted by mofattal

9v battery min voltage

HI I am building a unit that will have a small 9v battery for power. I will put a voltage comparator and it will activa...
10 comments posted 19yrs
posted by lerameur
10 comments posted 19yrs posted by lerameur

simple intermittent circuit

Hello, I'd like to make a simple circuit involving at a battery, a beeper or buzzer of some sort, and whatever else is...
6 comments posted 19yrs
posted by junkmailhell
6 comments posted 19yrs posted by junkmailhell

microcontroller

is anybody know interfacing micro controller usig vc++ with PC.
3 comments posted 19yrs
posted by akhilpatel2001
3 comments posted 19yrs posted by akhilpatel2001

circuit design

hi all, i need some help in designing a circuit with MOSFETs and resistors as the only components. the circuit should mi...
5 comments posted 19yrs
posted by mofattal
5 comments posted 19yrs posted by mofattal