DavidWardlaw said:wouldn't thost 1/4 watt resistors blow when massive current is passing through?
Also, wouldn't a special diode be needed as the one in your picture is used for DC, not AC?
Which picture, which resistors, and which diodes are you referring to?
Current through a resistor depends on the applied voltage and the resistance (refer to Ohm's law). Power dissipated by a resistor is voltage^2/R. You can apply 1 million volts to a 1/4 watt resistor if the resistance is high enough (and the resistor is long enough ).
Diodes work for DC and AC.
I_F
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