Measuring PT "sag"?
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- vanhalen5150
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Measuring PT "sag"?
Anyone know how the "sag" or power drop is measured on a power transformer?
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- chrisom
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Re: Measuring PT "sag"?
D. Friedman says the sag at the power supply secondary winding is a sag in the current, so you'd have to find a way to measure that. Same issue as measuring mA of current when biasing tubes. Possibly you could measure the voltage & then use ohm's Law to compute the current by plugging in the resistance load value & the voltage value, then doing the math?
Maybe the good old-fashioned osciliscope/dummy load/frequency generator setup would help or be neccesary? Dave?
Maybe the good old-fashioned osciliscope/dummy load/frequency generator setup would help or be neccesary? Dave?
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Re: Measuring PT "sag"?
measure plate voltage at idle and at full distortion. should drop around 90v
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- vanhalen5150
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Re: Measuring PT "sag"?
So I guess its not so much what the PT does by itself , but more of what the rest of the amp is doing to cause it to.
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Re: Measuring PT "sag"?
its about how the PT interacts with the rest yes
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Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39
http://www.myspace.com/prostitutes" onclick="window.open(this.href);return false;
Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39