
ac - How is the 220V line in US different from other parts of world ...
2017年10月29日 · If you have a device that needs 240V (220, 230, 240V is all nominally the same), the device generally will not care if that is derived as 1 phase and a neutral as you find …
Is mains 220 VAC rms, peak to peak or max amplitude?
2018年2月5日 · Please excuse me for such a basic question, but I can't seem to find a clear answer to it. When we say that mains power is 220 VAC, or 230, 110 or whatever value, is that …
power dissipation - TO-220 vs TO-3 advantages/disadvantages ...
2024年1月18日 · More modern packages like TO-247, TO-220, TO-3P are mounted directly on the heatsink, without the extra thermal resistance and cost of the L-bracket. Now if you put the …
How to wire three phases for 220V? - Electrical Engineering Stack …
2015年8月6日 · To convert your 380/220 Y supply to 220 delta or 220/127 Y, you need a transformer. The motor controller brochure seems to indicate that it can operate on 220 single …
ground - Difference between Line and Neutral in AC - Electrical ...
2012年8月23日 · I want to find out what is the difference between the AC (220 VAC) lines, (phase and Neutral). As I know that the Alternating Current (AC) has no polarity, so why do we have a …
power supply - How to convert 220 VDC to 24 VDC - Electrical ...
If you select a universal input 110-240V switching power supply as opposed to a dual input (typically 110-115 and 220-240) that uses the expected input rectification it should work out …
How much voltage/current is "dangerous"?
110 V (or 220 V; household voltage pretty much) is dangerous (i.e. can kill you) I think there's consensus on this, no need to try :) 60 V (old telephone lines) is supposedly dangerous (never …
heatsink - TO-220 case-to-sink thermal resistance - Electrical ...
2011年7月17日 · I'm using a KSC1173 TO-220 power transistor in a design, and I need to calculate the case temperature for the maximum average power dissipation, to see if the …
3 phase motor change from 440 V to 220 V with diagram question
If you said 220/440 than it shuld have 127V (start 2), 220V (run2), 254V(start), 440V (run). With a VFD the motor shall be connected as LOWER/RUN 2 delta. EDIT: Some mistakes: If you said …
How to detect 220 VAC voltage using an opto-isolator
2016年6月6日 · I created the following circuit. I plugged it in and it works!! Now I thought of adding an opto-isolator to the circuit in place of the LED. The value of C was the same. $$ X_c = …