Top positive Bewertung für Wissenschaftliches Spielzeug auf Banggood Germany|Kaufen Deutschland

1pc 10 Ohm 2A Schiebewiderstand Wissenschaftliche Entdeckungsspielzeuge Einstellbarer Widerstand Ohmischer elektrischer Schaltkreis Physikexperiment Pädagogisches Spielzeug

9% OFF 1pc 10 Ohm 2A Schiebewiderstand Wissenschaftliche Entdeckungsspielzeuge Einstellbarer Widerstand Ohmischer elektrischer Schaltkreis Physikexperiment Pädagogisches Spielzeug US$12.69 US$13.99 View It

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Karmajun 21/05/2020

Just received this model rheostat - potentiometer, and while it appears sturdy (the box was crushed & it came out looking like it was just manufactured) the issues I have are simple. I get that the core is an insulator, and that the wiper rod is a conductor, but the base appears to be electrically connected to the wiper making layout a little more complicated. I like to model things on a grounded base-plate and I'll likely need to mount this on an insulator with a small caution emblem so my students will observe their safety rules. But then, they are students and if they get shocked, they may learn something in my class! Clearly a nicely manufactured piece, I would have put the wiper riding rod on a clear insulator bracket instead of the same metal bracket holding the windings insulation core. I will check resistance of all the parts when I set it up for demo - the black collars on the wiper rod may well be insulators - the was it is constructed there is no way other than testing to tell. I shall have a friend of mine read the manual - I know how to use an old style open winding potentiometer but perhaps the 'manual' in Chinese gives some details that my mentors who remember Tesla may have forgotten to teach me.

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