Recent content by d1983

I've been thinking about this today, and here's one idea: I can put the input through a non inverting op amp in order to reduce the voltage by a factor of 10, then set up the reading on the chip to a 2V max (done in the spec sheets), and hard wire a decimal point. Any comments on this idea? I'd...

The +/- 5V is standard for the ICL7107 which drives an LED display. The ICL7106 drives an LCD with a 9V battery. I have read the application notes, and there is a way to make an autoranging voltmeter to get into the 20V range, but the schematic is a bit complex for me to reverse engineer it to...

I am trying to design a 3 1/2 digit 20V voltmeter using the ICL7106 and I was wondering if anybody could help me with a few things: 1. How could I get it callibrated to a max 20V reading? 2. I will be using it as an onboard voltmeter for a variable DC power supply. If I tap the source 18V...

I have just designed a brake/blinker system using high intensity LEDs and a 555 timer and it gave me an idea for a post: What's the coolest thing you've done using a 555 timer?

Great job. I'm going into third year and I really enjoy it too. UBC is a really good school. I was thinking about going there, but I ended up at Queen's.

You could always just switch the fuse to that area of the house if the outlets are in need of a good cleaning, couldn't you?

I'm currently in the process of redesigning the solenoids for a tattoo machine company. I was wondering if anybody was aware of a formula to find the amount of force that the solenoid would draw the armature. I can figure out just about every variable that I think I'd need: flux density, air gap...