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用户3519980 2013-11-1 21:10: Troublesome colour organ; Among young partiers in the 1970s, colour organs were a popular means of bringining psychedelic light shows (and possibly other psychedelic substan ...; 1364 18 0 18

ac filters organ

用户3519980 2013-10-31 21:03: Fix relays with scavenged parts; A university chemistry department houses a broad range of equipment, ranging from technologically recent equipment to old equipment, older equipmen ...; 1474 20 0 20

mass Small-signal relay

用户3519980 2013-10-31 21:02: Repairing the TV lightning killed; My grandparents' TV went dead. My dad, a radio and TV repair person, took a quick look and thought the damage was caused by a line spike, maybe fro ...; 1366 23 0 23

TV IF coils resistor

用户3519980 2013-10-31 21:02: Breathing new life into relays; In a university chemistry department, there is a broad range of equipment, ranging from technologically recent equipment to old equipment, older eq ...; 1449 21 0 21

alarm mass spectrometer

用户3519980 2013-10-30 18:58: Use an oversampling technique for serial protocols; Serial communication has long been an effective means of transmitting data with a minimum set of wires across long cables and different media. The ...; 1484 13 0 13

Serial oversampling SERDES

用户3519980 2013-10-30 18:21: What a lazy motor!; In the early half of the 1970s I purchased (second hand, of course...) a monster cassette tape deck. Monster for many reasons—I'll just name a few ...; 1551 20 0 20

brushless motor controller cassette tape

用户3519980 2013-10-30 18:14: Power supply nightmare; Inheriting someone else's bad design can sometimes be a real nightmare. My bad dream was a switching power supply for a legacy telecom shelf ...; 1181 18 0 18

power supply PCBs ESR

用户3519980 2013-10-29 23:51: Making S-Meters behave well; It is already out of production, but during its time the Heathkit HR-1680 was a low-cost and reasonably high-performing, ham-band-only (80 through ...; 1209 19 0 19

MOSFET s-meter HR-1680

用户3519980 2013-10-29 23:48: Unruly S-Meters; The Heathkit HR-1680 is no longer produced these days, but during its time it was a low-cost and reasonably high-performing, ham-band-only (80 thro ...; 1515 24 0 24

MOSFET adio receiver antenna

用户3519980 2013-10-25 19:41: My magic mower; My childhood was spent in a city big enough to rightly call itself a city, yet small enough that kids still had considerable freedom to roam the st ...; 1071 17 0 17

mower lawnshredder carburetor

用户3519980 2013-10-25 19:24: The unrestrained lawnshredder; I grew up in a city large enough to rightly call itself a city, yet small enough that kids still had considerable freedom to roam the streets. Duri ...; 1164 17 0 17

engine awnshredder carburetor

用户3519980 2013-10-21 18:16: The fix to troublesome psychedelics; In the 1970s, young partiers used the colour organs as a trendy way to bring psychedelic light shows (and possibly other psychedelic substances) in ...; 1595 20 0 20

psychedelic AC bandpass filters

用户3519980 2013-10-21 17:55: Massive telecommunications breakdown; In broadcast engineering, one of the priniciples is that when something breaks you shouldn't focus on fixing it. Your first action is to get things ...; 1900 9 0 9

TV broadcast engineering

用户3519980 2013-10-21 17:51: Global telecomms failure; One of the principles of broadcast engineering is that when something fails you shouldn't focus on fixing it. Your first action is to get things ba ...; 1162 14 0 14

broadcast engineering TV satellite

用户3519980 2013-10-17 19:39: Bringing an organ back to life; It was in 1970 when I was 15 years old. I decided that I wanted a job working on electronics. I visited TV shops and such, and no one would hire me ...; 1378 19 0 19

actuators organ Thomas

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