pouder & Jbig, thanks for the ideas..... got muh mind buzzing now
yesterday...i made the following comparison.
using a FWBR off a shaded pole coil..going to a capacitor with a 100 Ohm resistor across it..
i inputed 12.5V DC at 50% duty cycle, showing 240mA being drawn from the battery, while the voltage across the resistor was 3.0VDC
using the same frequency & duty, i then ran my 1,2,4,8,7,5 VDC PIC program into the coil... drawing 100mA and showing 1.33VDC on the resistor...now...
since the 1,2,4,8,7,5 program is a combination of voltages applied....the average voltage is... (1+2+4+8+7+5) / 6 = 4.5 then *1.5 ( so that the 8 becomes 12V.... = 6.75VDC average
totting up the numbers..
straight 12VDC signal
--------------------
input = 12.5 * 0.240 = 3 watts
output = (3/100) *3 = 0.09 watts
ratio of input to output = 0.09 / 3 = 3%
1,2,4,8,7,5 signal
----------------
input = 6.75 * 100 = 0.675 watts
output = (1.33 / 100) * 1.33 = 0.018 watts
ratio of input to output = 0.018 / 0.675 = 2.6%
on this basis the 1,2,4,8,7,5 signal is not as efficient as a straight 12.5V signal...however... that was using both winidngs on the Rodin in Series..therefore...when winding A was energised...so was winding B ( by virtue of being connected )...and this is NOT the way Marko Rodin describes how the coil should work... he says that when one winidng is ON...the other should be off......then both off.....then repeat...my question...
How would i go about combining the 1,2,4,8,7,5'ness together with the "one winidng on......then the other winding on....then both windings off"......using the PIC32 to control it all?
im not asking for code samples or anything like that ( programming the PIC is easy ).....im asking more on a theoretical level......how to combine both paradigms and then feed it to the coil?
David. D
yesterday...i made the following comparison.
using a FWBR off a shaded pole coil..going to a capacitor with a 100 Ohm resistor across it..
i inputed 12.5V DC at 50% duty cycle, showing 240mA being drawn from the battery, while the voltage across the resistor was 3.0VDC
using the same frequency & duty, i then ran my 1,2,4,8,7,5 VDC PIC program into the coil... drawing 100mA and showing 1.33VDC on the resistor...now...
since the 1,2,4,8,7,5 program is a combination of voltages applied....the average voltage is... (1+2+4+8+7+5) / 6 = 4.5 then *1.5 ( so that the 8 becomes 12V.... = 6.75VDC average
totting up the numbers..
straight 12VDC signal
--------------------
input = 12.5 * 0.240 = 3 watts
output = (3/100) *3 = 0.09 watts
ratio of input to output = 0.09 / 3 = 3%
1,2,4,8,7,5 signal
----------------
input = 6.75 * 100 = 0.675 watts
output = (1.33 / 100) * 1.33 = 0.018 watts
ratio of input to output = 0.018 / 0.675 = 2.6%
on this basis the 1,2,4,8,7,5 signal is not as efficient as a straight 12.5V signal...however... that was using both winidngs on the Rodin in Series..therefore...when winding A was energised...so was winding B ( by virtue of being connected )...and this is NOT the way Marko Rodin describes how the coil should work... he says that when one winidng is ON...the other should be off......then both off.....then repeat...my question...
How would i go about combining the 1,2,4,8,7,5'ness together with the "one winidng on......then the other winding on....then both windings off"......using the PIC32 to control it all?
im not asking for code samples or anything like that ( programming the PIC is easy ).....im asking more on a theoretical level......how to combine both paradigms and then feed it to the coil?
David. D
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