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This is the circuit from inside an energy-saving compact fluorescent lamp (CFL). There's a transformer, an electrolytic capacitor, an inductor, and some resistors. It's from our article on how energy-saving lamps work.
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Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
Operated with a universal remote control, RaspRadio is waiting for being built in in a nice little box.
Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
Transistors, Resistors, Diodes, and wiring for Red/Yellow/Green Lamps and 2 PING))) Ultrasonic Sensors
blog.mattsatorius.com/technology/alto-arduino-parking-ass...
Nanda is making a bracelet out of colourful electrical wire and resistors at Moem's workshop Geeky Jewelry (in which the participants make earrings, bracelets, pendants, amulets and assorted bling from shiny electrical components and computer parts).
Sheet with a List of Included Parts and Plan where to mount.
Glued to the Sheet one of each:
DUO LED
LED
Resistor 47K
Resistor 100K
Resistor 220K
Resistor 1M
I was building an adapter from my high speed photography controller to my camera's cable release port. Some active electronics were necessary- my device outputs voltage, and my camera expects a circuit closed between its pins. I really wanted a nice clean cable with no big lumps in the form of cases for those electronics. So, I challenged myself to pack them all into the plug- two surface-mount transistors, and two resistors.
It sort of looks like a mess at this scale, but remember that those transistors are just a little over two millimeters on their widest edge. Immediately after taking this picture, I slipped a little plastic tube around all of this and pumped it full of hot glue before screwing the plug together.
Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
Added the function to have the circuit turn on when it gets dark and turns off when it gets light. No need to turn it on manually; all done automatically.
This is an incredibly simple sub-circuit: a resistor, transistor, and photoresistor. Getting closer to completing the full concept of the fireflies.
Detailed version of the firefly "blinky" sub-circuit can be found here:
resistor test 49R9 / 4*1960R.
Sorry, I have run out of isopropanol. No cleaning up.
This is a 50 Ohm Microstrip on FR-4 with one 49R9 termination resistor on the left side and 4 pcs. 1960 resistor on the other side. The microstrip is broken in the middle, so this are really 2 test objects.
Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
This PCB design was created in Fritzing. The amazing this is that I only put it together in the Prototyping mode, and when I clicked on the "PCB" button It was there ready and waiting for me. I did have to edit the tracks but all the components were there letting me know which connections needed to be made.
Now I need to get into etching my own PCBs!
If you're interested in electronics, you can get the executable here: fritzing.org/. Available for Windows, Linux and Mac, Source available as well.
OH MY GOODNESS. Radio Shack actually STILL SELLS COMPONENTS. I was able to make it out of the store with these before they tried to sell me a cell phone or a satellite dish.
uses set screws to hold the power resistor and thermistor or thermocouple in position. New, smaller nozzle also shown...
Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
OMG gorgeous! totally!! even tho i waited fucken long for this. but heck~ really wonderful hand drawns.
many stickers from other artist: (not in order)
Colate, Resistor, Caspa, 2Tone, Synical, Messy Menk, Creeps, Nobody, Anybody, D3D, Dirz, Lazynachos, SAPE, NANO, Biafra Inc, YELZ, Onimaru, Delme, Theory Propaganda, TBOHOO, Mouse, Kandycore, Meya, XIV, Czakoo, Hi-Top, Liquidnight, VALK, RobotsWillKill, ELNA, Keer, Beautifully Urban, Barbados, OKEL, C.13 & Zu Dragon. (hope i dont miss out any)
ps: too many to tag. do add them yourself!
Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
Handy repair kits by Ken K4EAA, For the KENWOOD / TRIO
TS-830S TS-530S Valve / Tube PA Hybrid Transceivers,
4 x 20 ohm cathode resistors, 2x 100 ohm screen and 470 ohm
Rectifier board screen resistor, Final cage cap replacements etc,
All easy to fit
73, de Dave 2W0DAA / GW4JKR
The soldered wine charms are semi-permanent. They will stay connected indefinitely. Depending on the type of component and what your washing procedures are like, the markings on the charm may fade eventually, or perhaps you just want to change resistor values, or from a capacitor to an inductor. The charms come off, well, like a charm, with a simple snip.
This is part of a DIY "solder your own wine charms" project; read more about it here.