VoltXP Function Generator App

This app is a Windows/Linux function generator. It can do sine,sawtooth,square,triangle,noise and sweep. It allows you to use your parallel or serial port as a square wave generator. It also can be configured through the command-line. Has a nag screen when parameters are passed without registering the password. You can click on the black screen …

Things you can do with Soundcards

There are a couple things a soundcard could come in handy for electricians. Dual channel oscilloscope and RCL meter/ The first circuit shows you a design for oscilloscope: That circuit gives an impedance <500K on CH1 and CH2. R1 and R2 adjust the voltage range. R3 and R4 is for current limiting resistors for the …