07-29-2015, 03:09 PM
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Philco 46-1226 code 125 HELP !!!
07-29-2015, 03:09 PM
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07-29-2015, 03:59 PM
Here's the schematic.
07-29-2015, 09:49 PM
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07-29-2015, 10:57 PM
OK, I was hoping Chucks docs had the run changes and wattages in them.
07-30-2015, 05:37 PM
Hi Ken,
Perhaps this will shed some light on this issue. 1.2 Resistor Dissipation If the flow of current through a resistor increases, it heats up, and if the temperature exceeds a certain critical value, it can be damaged. The wattage rating of a resistor is the power it can dissipate over a long period of time.
Wattage rating is not identified on small resistors. The following diagrams show the size and wattage rating: Fig. 1.3: Resistor dimensions
Most commonly used resistors in electronic circuits have a wattage rating of 1/2W or 1/4W. There are smaller resistors (1/8W and 1/16W) and higher (1W, 2W, 5W, etc).
Power (in watts) can be calculated according to one of the following formulae, where U is the symbol for Voltage across the resistor (and is in Volts), I is the symbol for Current in Amps and R is the resistance in ohms:In place of a single resistor with specified dissipation, another one with the same resistance and higher rating may be used, but its larger dimensions increase the space taken on a printed circuit board as well as the added cost. They don't show a 5w resistor but it is about the same length as the 2w but is a bit fatter about 9mm or3/8 " GL Terry
07-30-2015, 08:02 PM
Thank You,,,Terry,,,,
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