Electric OU: The Dim Bulb Test Part 1
The Dim Bulb Test (no audio) All batteries were charged with an automatic automotive battery charger until it indicated that they were fully charged. No load voltage after settling was 13.15 -13.20 volts each. One battery was randomly chosen and set aside. The other three were series-connected and the resultant 36 volt nominal pack was used to power the Tar Baby device for a series of tests. The device was used to heat a 10.3 ohm resistive/inductive load, in 250 ml mineral oil in an insulated container, to over 250 degrees F. and was also used at a lower power dissipation setting for several hours, until the pack voltage indicated below 33 volts. The batteries were then separated, and one was used in the Function Generator Charging experiment, where it was charged to 11.7 volts (no-load) indicated, by the FG only, through a rectifier diode. Then this battery along with the others was allowed to settle overnight. The batteries were then put side-by-side and connected to #1157 automotive light bulbs, with both filaments in parallel. The results were recorded on time-lapse video at 1 frame PER 2 seconds, to be played back at 10 frames per second. The result is what you see here. Batteries: 12 V, 5 AH, Toyo-Usp 6FMH4 Bulbs: NOS #1157 Camera: GearHead webcam Software: HandyAVI, WinFF TarBaby: using 5 x IRFPG50 mosfets, FG set to 1 kHz, negative going pulse, varied offsets Load: 5 x 50 Ohm, 12 Watt Clarostat wirewound resistors, submerged in 250 ml mineral oil (specific heat …
