Welding Pulse Monitor

[tonyfoale]

A small tip about an oscilloscope that I need in this.

Some of you may feel it's too costly to buy an oscilloscope for a sort of small job like this, namely to see the wave forms of your welding.

Chy

Probably the cheapest oscilloscope is software on a laptop which plots the input on the microphone jack. Unfortunately the frequency response would probably not extent down to the 1 Hz range.

Other cheap options include Arduino (and similar micros) based scopes, either stand alone with a dedicated TFT screen or even cheaper using a laptop for display and signal processing.
There are many examples of how-to on the net.

A big step up the food chain are oscilloscope boxes that connect to a laptop. I use a "Picoscope" which start from around USD 120+ and go up to $1000s. These are full featured scopes but with the advantage over dedicated scopes that the software has more processing power available from the PC.