Transformer pinout? (WTF is the primary?!)
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Stupid question, but here goes...
I'm trying to use THIS x-former for impedance matching a mammoth clone's input (so I can use it w/my active basses) using Jack Orman's diagram as seen below, but using a 5k instead of a 25k trimpot based on the PC10k/10k's impedence.
My question is: Based on THIS INFO, where the hell is the primary on the pinout? (Which solder lugs to I need to connect to for the input, the CT, and the Output? I dunno if I need to use the CT, but since I have the switch I figure it can't hurt. Maybe it'll give a similar response to a soloed Jazz neck pick up but w/a more dynamic freq. response?)
Also, can I just use a pot or a trimpot instead of a switch (like a variable resistor) to select the impedance between the CT and the output of the primary, so I can dial in something more specific to meet my tonal needs? (Ct @ lug 1, primary output @ lug 3, & lug 2 into the input cap of the mammoth)
Anyway, can someone please help me figure this one out?
Thanks for your assistance.
I'm trying to use THIS x-former for impedance matching a mammoth clone's input (so I can use it w/my active basses) using Jack Orman's diagram as seen below, but using a 5k instead of a 25k trimpot based on the PC10k/10k's impedence.
My question is: Based on THIS INFO, where the hell is the primary on the pinout? (Which solder lugs to I need to connect to for the input, the CT, and the Output? I dunno if I need to use the CT, but since I have the switch I figure it can't hurt. Maybe it'll give a similar response to a soloed Jazz neck pick up but w/a more dynamic freq. response?)
Also, can I just use a pot or a trimpot instead of a switch (like a variable resistor) to select the impedance between the CT and the output of the primary, so I can dial in something more specific to meet my tonal needs? (Ct @ lug 1, primary output @ lug 3, & lug 2 into the input cap of the mammoth)
Anyway, can someone please help me figure this one out?
Thanks for your assistance.
- dai h.
- Solder Soldier
in the diagram, the transformer is not being used as a transformer. It's being used as an inexpensive, easy-to-find inductor (in a pickup simulating circuit). A series VR should affect the impedance though I would think, increasing as the resistance goes up.
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Yeah I get that part... I just need to know which lugs I need for my source in, center tap, and primary out in order to use the primary as an inductor.
- dai h.
- Solder Soldier
okay. So if you are going to use the Xfrmer as shown in the diagram (if I'm understanding you correctly), couldn't you just use the continuity check or ohms function on a DVM to check for the connected lugs. Also on my Xicon (same maker *I think*) Xfrmer for my octavia clone (if memory serves) the pri. and sec. were marked with a "P" and "S", so maybe it's the same for your Xfrmer as well?
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Ok I'll check for continuity. No there's nothing marked, and on the pinout on the PDF I linked there's only Positive input/CT/Negative input on one side, and Positive output/CT/Negative output on the other.
There's no info about primary and/or secondary to be found, hence my confusion.
There's no info about primary and/or secondary to be found, hence my confusion.
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OK, well I get continuity from + in to CT to - in, as well as + out to Ct to - out.
Still not sure which side to use for this tho. Does it even matter?
Still not sure which side to use for this tho. Does it even matter?
- dai h.
- Solder Soldier
I'm not absolutely sure, but if you're using the Xfrmer as an inductor(one side only), I'd guess it doesn't matter. (Conversely, if it was being as a Xfrmer. I'd think it would--that is, there would be a difference in polarity of the signal.)