Saturday, May 21, 2016

Tuesday, December 22, 2015

Wednesday, April 29, 2015

Removing magnet wire enamel coating Insulation



3. Using acetylsalicylic acid found in aspirin drug:

[1] Put the wire (end) on top of the aspirin tablet. 
[2] Now using hot soldering iron, press against the wire (and tablet).
[3] Hold for 2-3 sec, then check for removal of coating.
[4] Repeat the process if necessary. 
[5] Clean the wire.
This can be combined with usage of smooth sandpaper (see 2).

Monday, March 23, 2015

Basic Soldering Lessons

Basic Soldering Lessons (1-9) ,youtube playlist:

https://www.youtube.com/playlist?list=PL926EC0F1F93C1837

(Produced by PACE, Inc.)

Tuesday, March 17, 2015

Saturday, November 8, 2014

AC Generator frequency as a function of RPM


w - angular velocity.
f - frequency (number of cycles per second, expressed in Hz).
P - number of poles (= N + S poles. ).
P/2 - number of pole pairs. Above generator example has two poles and one pole pair.
Ns - number of revolutions per second 
Nm - number of revolutions per minute
Nm=60*Ns.

w=2Pi*f = (P/2) * N * 2Pi * 1/sec

f=(P/2)*N/sec
f=(P/2)*Ns

f=(P/2)*Nm/60=P*N/120

f=P*Nm/120