"Start" and "finish" are arbitrary terms with respect to this configuration. Replacement transformers are not always identical, so if you get squeals or other odd sounds when hooking up a new output transformer, try reversing the output leads. Ordinarily the black side should also be grounded, if the speaker is grounded. Plate lead (pri.) - blue (start)ī+ (power supply) lead - red (center tap)
Is there a standard scheme for output transformer wire colors?ĭerived from the ARRL Radio Amateur's Handbook: Is there a standard scheme for power transformer wire colors? GRN - control grids, diode plates (and base 1 of transistors) ORA - screen grids (and base 2 of transistors) It's magnetic properties are unrelated to it acting as a shield - only one electrical connection is used with the other end of the winding unterminated or unconnected.Is there a standard scheme for hookup wire colors?īLA - grounds, grounded elements, returns
Magnetic in nature, or have a filtering aspect to it?Ī winding is used because (a) it is convenient to wind one when constructing the transformer and (b) it won't circulate eddy currents because each turn will be insulated from each other. This also usually means proper earth.Īnd can the "winding" be just a strap? Or is its isolation also
In these cases, color coding should be added during installation, via colored bands that wrap around the wire. When wires are larger than 6 AWG, they are manufactured with black insulation. Most narrow wires will be color-coded by the manufacturer, using insulation of different colors. Ground in these circumstances will mean the 0 volt reference point for the circuit you are trying to protect. Applying Color Codes to Electrical Wiring. Well, the wiki article I found was quite explicit:. It must be connected to something, but what? It's not there to stop an ESD event although it will do so in some circumstances providing the shield (the electrostatic shield shown in your picture) is grounded. The grounded shield prevents capacitive coupling between primary and Line Isolation Monitor The Bender LIM2010 series Line Isolation Monitor provides both digital and analog displays.
See ordering information for available primary and secondary voltages. I assume channels electrostatic discharge (ESD) away from the Isolation transformers are available with various primary and secondary single-phase volt-ages.
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