LM3914 meter for 25 V DC
“I wish to assemble a bargraph display to indicate approximately 25volts dc.How many LM3914 I should cascade? How to calculate resistor value which is grounded from the junction of Pin 6 & 7 (Rhi...
Tagged: Small-Instruments
ICL7129 AD Converter needs Triplexed LCD
I’m using the ICL7129ACPL to construct a simple 4-1/2 digit DVM. I looked over the application notes on FE LCDs on a similar post and noticed that it listed the FE0206 4-1/2 digit LCD...
PC Sound Card Oscilloscope
Dear DAPJ: I would like to buy a Microphone and either #1. an oscilloscope or #2. sound oscilloscope software. For hobby purposes, I would like to sample different sounds & view the various sound...
