Posts tagged ‘Charge Pump’

Keithley 197 Battery Option Build

I have been quite happy with my fixed-up Keithley 197 5 ½ digit bench meter purchased from eBay (you can find the teardown pictures here) earlier this year. Keithley 197 has a battery pack option (Model 1978), and this option allows it to run on battery power for 5 hours without having to plug into the mains. While it is far from being a truly portable meter, its performance easily surpasses most hand-held multimeters. So I decided to build the battery option myself and hopefully I would be able to use the meter more often in places where power outlets are not available. Continue reading ‘Keithley 197 Battery Option Build’ »

Building a USBPICProg PIC Programmer

I mentioned in one of my previous posts that I decided to give PIC family MCUs a spin after having been working with AVR chips for sometime. From a pure technological stand point PIC programming and AVR programming are not all that different, especially if you are using a high level language like C. But the AVR world definitely seems to have a few advantages in the open-source arsenal such as avr-gcc and Arduino. Continue reading ‘Building a USBPICProg PIC Programmer’ »