Current Limiter Light Bulb. Make sure the switch on the current limiter is off and then plug your electronic device into the current limiter. This video describes in detail how to construct a current limiting device to protect you your test equipment and any electronic gear that you are testing.
If we d like to use a bulb as a limiter we need to choose a bulb that will run pretty cold on a current draw of 700ma and only start heating up and rising in resistance and heat dissipation when exceeding that number. R1 35 0 7 30 2 5 410 ohms wattage for the above resistor would be p v2 r 35 x 35 410 2 98 or 3 watts. Anyone here ever hear of this.
R1 us 0 7 hfe load current where us supply voltage hfe t1 forward current gain load current led current 100w 35v 2 5 amps.
A 150w bulb connected to 220v will draw 680ma so it will probably light brightly under the receiver s normal current draw. The more current your device draws the brighter the light will get. With that ladies and gentlemen let me come to the main topic of the day what is series bulb current limiter. He took an extension cord cut just one of the wires and put a light bulb scoket on that side.
