/diy/ - Do It Yourself

Anonymous Sun Aug 19 13:48:19 2018 No.1448315 [View]
File: 17 KB, 503x366, opera_2018-08-19_19_2907.jpg [View same] [iqdb] [saucenao] [google]

>>1448313
I imagine it has some resistance against the ground, I haven't measured it. The welder only receives one signal cable, the output of R1, and the welder provides the 20V DC and the ground. Whatever the voltage (or resistance) it measures is what makes it set the welding current. It's the same operation as any other case of a pot hooked up to control something indirectly.
Pic related is what it looks like in practice, there's no physical 1k resistor between ground and welder input within the foot pedal.

Advanced search
Text to find
Subject [?]Search by post subject. Leave empty for any.
Username [?]Search for user name. Leave empty for any user name.
Tripcode [?]Search for tripcode. Leave empty for any.
Email [?]Search by email. Leave empty for any.
Filename [?]Search by image filename. Leave empty for any.
From Date [?]Enter what date to start searching from. Format is YYYY-MM-DD
To Date [?]Enter what date to start searching until. Format is YYYY-MM-DD
Image hash
Search in	All Posts OPs Only
Deleted posts	Show all posts Show only deleted posts Only show non-deleted posts
Internal posts	Show all posts Show only internal posts Show only archived posts
Order	New posts first Old posts first
Capcode	All Posts Only by Users Only by Mods Only by Admins Only by Developers
Results	Posts Threads
Action	[ Simple ]

Navigation
View posts	[+24]	[+48]	[+96]

/diy/ - Do It Yourself

Search: