BEST SELLERS

Super-Thin HDTV Antenna

Break free of cables with this passive RCA HDTV antenna that’s so thin it virtually disappears. Made to receive free HD/VHF/UHF signals, the antenna is a pair of extremely thin black plastic wings, each 14” long x 3” tapering to 3/8”. Overall, it’s 29” long x approx nothing deep. The center connector has a 50” length of thin COAX cable with an “F” connector to mate with the TV input. Marked refurbished, but you can’t tell them from new. A little assembly is required.

accent

FLAT WINGED HD/VHF/UHF TV ANTENNA

Super-Thin HDTV Antenna

Break free of cables with this passive RCA HDTV antenna that’s so thin it virtually disappears. Made to receive free HD/VHF/UHF signals, the antenna is a pair of extremely thin black plastic wings, each 14” long x 3” tapering to 3/8”. Overall, it’s 29” long x approx nothing deep. The center connector has a 50” length of thin COAX cable with an “F” connector to mate with the TV input. Marked refurbished, but you can’t tell them from new. A little assembly is required.

accent
$12.50 EACH

Ear's Listening To You, Kid

These 36-Ohm ear buds have 15-foot leads, so you could practically leave your pod/pad/phone in another room, with the standard 1/8" plug at the the end that isn't in your ears. We'll send (2) pair because we know you keep losing these things or ripping the wires off (although 15-foot leads may just take care of that little wire problem).

accent

EAR BUDS WITH 15-FT LEADS

Ear's Listening To You, Kid

These 36-Ohm ear buds have 15-foot leads, so you could practically leave your pod/pad/phone in another room, with the standard 1/8" plug at the the end that isn't in your ears. We'll send (2) pair because we know you keep losing these things or ripping the wires off (although 15-foot leads may just take care of that little wire problem).

accent
$3.95 PKG (2)

SOLDERABLE PERF BOARDS

This solderable perf board for the electronics hobbyist measure 1-1/2” x 1-3/4” x 1/16” or 3-1/4" x 2-1/2" x 1/16" with 1mm dia copper pads on one side with holes sized for component leads. Has 1/8" dia mounting holes on the corners.

accent

ELECTRONICS PERF BOARD, 2-1/2"

SOLDERABLE PERF BOARDS

This solderable perf board for the electronics hobbyist measure 1-1/2” x 1-3/4” x 1/16” or 3-1/4" x 2-1/2" x 1/16" with 1mm dia copper pads on one side with holes sized for component leads. Has 1/8" dia mounting holes on the corners.

accent
$3.50 PKG (2)

Meet the Meters

Amps and volts, go together like pretzels and mustard, at least in Philadelphia. Where were we? Yes, you pick from our 0-10VDC in 0.2 volt increments voltmeter or the zero-adjust ammeter (Galvanometer) that reads bipolarity up to 500mA in 20mA increments. Both are in black plastic housings, 4" x 5-1/2" x 3-3/4" with a slanted face and red & black banana jack terminals.

 

accent

ANALOG VOLTMETER WITH ZERO ADJUST

Meet the Meters

Amps and volts, go together like pretzels and mustard, at least in Philadelphia. Where were we? Yes, you pick from our 0-10VDC in 0.2 volt increments voltmeter or the zero-adjust ammeter (Galvanometer) that reads bipolarity up to 500mA in 20mA increments. Both are in black plastic housings, 4" x 5-1/2" x 3-3/4" with a slanted face and red & black banana jack terminals.

 

accent

Irresistible Capacitor Collection

Ten dozen, to be exact. Our package of 120 radial lead electrolytic capacitors comprises: (15) each of 1uF, 2.2uF, 4.7uF, 10uF, and 22uF at 50V, (15) each of 47uF and 100uF at 25V, and (5) each at 220uF, 470uF and 1000uF at 25V. From Velleman®.

accent

120 CAPACITORS

Irresistible Capacitor Collection

Ten dozen, to be exact. Our package of 120 radial lead electrolytic capacitors comprises: (15) each of 1uF, 2.2uF, 4.7uF, 10uF, and 22uF at 50V, (15) each of 47uF and 100uF at 25V, and (5) each at 220uF, 470uF and 1000uF at 25V. From Velleman®.

accent
$20.95 EACH

Boing, Gaboing Gaboing Pack

Big sack o' springs. You get (10) springs, mostly compression but probably with a few extension springs thrown in for dessert. Great for art projects, kinetic sculpture or creating tension in any number of scenarios. In sizes ranging from 3/4" long x 1/2" dia up to 2-5/8" long x 1-7/8" dia.

accent

SPRING ASSORTMENT

Boing, Gaboing Gaboing Pack

Big sack o' springs. You get (10) springs, mostly compression but probably with a few extension springs thrown in for dessert. Great for art projects, kinetic sculpture or creating tension in any number of scenarios. In sizes ranging from 3/4" long x 1/2" dia up to 2-5/8" long x 1-7/8" dia.

accent
$3.95 PKG (10)

Wire You Waiting?

Don't wait or it'll all be gone. You get (4) pieces, 11 feet each, of 18-2 wire, polarized, black with a white stripe and eminently discardable spade-push terminals on both ends. (That's under a nickel a foot, cowboy.) Lamp cord, speaker wire, pretty much anything you run juice to.

accent

(4) 11-FT HANKS OF POLARIZED 18-2 WIRE

Wire You Waiting?

Don't wait or it'll all be gone. You get (4) pieces, 11 feet each, of 18-2 wire, polarized, black with a white stripe and eminently discardable spade-push terminals on both ends. (That's under a nickel a foot, cowboy.) Lamp cord, speaker wire, pretty much anything you run juice to.

accent
$2.50 PKG (4)

Quartz Crystal Antenna

Build your own quartz antenna. These (2) 4-3/8" x 3" x 1-5/16" plastic boxes each have (2) boxes of quartz crystals inside and (2) aluminum U-brackets that are attached to a single screw terminal on one short side of the box. Back in the early 70's, they were originally made to be used in pairs as part of a 300 Ohm antenna. Not sure if they will work with today's TV's but all you need is cabling to connect them and give it a try. Made in Brazil, the antenna capital of South America, probably.

accent

QUARTZ CRYSTAL ANTENNA

Quartz Crystal Antenna

Build your own quartz antenna. These (2) 4-3/8" x 3" x 1-5/16" plastic boxes each have (2) boxes of quartz crystals inside and (2) aluminum U-brackets that are attached to a single screw terminal on one short side of the box. Back in the early 70's, they were originally made to be used in pairs as part of a 300 Ohm antenna. Not sure if they will work with today's TV's but all you need is cabling to connect them and give it a try. Made in Brazil, the antenna capital of South America, probably.

accent
$4.95 PKG (2)

Pre-Wired LEDs

These LEDs are wired with an in-line diode on one leg so you can run them with either AC or DC. 24 volts works best (do not run them on 120V!) drawing 4mA. You'll get leads between 4" and 9" with quick-disconnect terminals. You pick yellow or red.

accent

RED LEDS WITH LEADS

Pre-Wired LEDs

These LEDs are wired with an in-line diode on one leg so you can run them with either AC or DC. 24 volts works best (do not run them on 120V!) drawing 4mA. You'll get leads between 4" and 9" with quick-disconnect terminals. You pick yellow or red.

accent
$3.95 PKG (10)

PELTIER HEAT PUMP

High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.

accent

PELTIER JUNCTION THERMO-ELECTRO DEVICE

PELTIER HEAT PUMP

High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.

accent
$11.95 EACH

LCDs

These liquid crystal displays are raring to go. As soon as we can get Mary Ann to stop playing with them we'll pick out (5) assorted displays for you. (She keeps zapping them with static electricity to see what pops up. Mary Ann is easily amused.) Sizes range from 1-3/16" x 2" to a few as large as 5" x 10". They're unused. Some have pin leads, some have traces right on the wafer. Either way, they're a terrific bargain.

accent

LIQ CRYS DISPLAY

LCDs

These liquid crystal displays are raring to go. As soon as we can get Mary Ann to stop playing with them we'll pick out (5) assorted displays for you. (She keeps zapping them with static electricity to see what pops up. Mary Ann is easily amused.) Sizes range from 1-3/16" x 2" to a few as large as 5" x 10". They're unused. Some have pin leads, some have traces right on the wafer. Either way, they're a terrific bargain.

accent
$2.50 PKG (5)

Float Like A Valve

This float valve assembly has a 2-15/16" x 1-9/16" dia white, barrel-shaped plastic float on a 1" x 1-1/4" stainless steel arm, making it look like a float valve for a Lilliputian toilet tank. Arm is connected to a 1/4" ID check valve with a 1" long flattened shaft and cotter pin connector. Designed for a bottom mount.

accent

SMALL FLOAT VALVES

Float Like A Valve

This float valve assembly has a 2-15/16" x 1-9/16" dia white, barrel-shaped plastic float on a 1" x 1-1/4" stainless steel arm, making it look like a float valve for a Lilliputian toilet tank. Arm is connected to a 1/4" ID check valve with a 1" long flattened shaft and cotter pin connector. Designed for a bottom mount.

accent
$3.95 PKG (2)

Toothsome

This black plastic gear is 3-1/16" dia with (96) teeth at 32 pitch, 20-degree pressure angle. Center has a 9/16" ID bore with a 3/4" dia x 1/8" bushing on both sides. One side also has (3) 3/32" ID x 1/8" standoffs along with a 3/16" tooth along one edge. Source and function are unknown but you'll think of something.

accent

3-1/16" PLASTIC GEAR

Toothsome

This black plastic gear is 3-1/16" dia with (96) teeth at 32 pitch, 20-degree pressure angle. Center has a 9/16" ID bore with a 3/4" dia x 1/8" bushing on both sides. One side also has (3) 3/32" ID x 1/8" standoffs along with a 3/16" tooth along one edge. Source and function are unknown but you'll think of something.

accent
$3.95 PKG (3)

A Thousand Spins

This small reversible DC motor from JEI runs on 3-6VDC. At 6V it draws 350mA no load and stalls at 1.9A. Spins approx 1000 rpm and approx half that at 3V. Great for science fairs, hobbies and any kind of project that needs spinning. Measures 1-3/16" long x 7/8" dia with a 1/4" x 1/16" shaft and tiny contacts for power that you'd best solder.

accent

3-6VDC MOTOR

A Thousand Spins

This small reversible DC motor from JEI runs on 3-6VDC. At 6V it draws 350mA no load and stalls at 1.9A. Spins approx 1000 rpm and approx half that at 3V. Great for science fairs, hobbies and any kind of project that needs spinning. Measures 1-3/16" long x 7/8" dia with a 1/4" x 1/16" shaft and tiny contacts for power that you'd best solder.

accent
$3.25 PKG (3)

ALL THE COOL KIDS ARE DOING IT

We searched the world over to find a good source for the most popular transistors. Success! Check out our listing and pick your favorite. Click the item to view the pin outs.

accent

TRANSISTOR, 2N2907 PNP, TO-18 CASE (I)

ALL THE COOL KIDS ARE DOING IT

We searched the world over to find a good source for the most popular transistors. Success! Check out our listing and pick your favorite. Click the item to view the pin outs.

accent
$0.95 EACH

Guaranteed To Shrink

You get (3) packs of Gardner Bender black heat-shrink tubing, at least (2) different, from our selection of 3/16", 3/8" and 3/4", all 4" long. This is the best way to keep your wires tidy and packed in, and watching that tube shrink into shape is worth the project alone.

accent

HEAT-SHRINK TUBING ASSORTMENT

Guaranteed To Shrink

You get (3) packs of Gardner Bender black heat-shrink tubing, at least (2) different, from our selection of 3/16", 3/8" and 3/4", all 4" long. This is the best way to keep your wires tidy and packed in, and watching that tube shrink into shape is worth the project alone.

accent
$3.75 PKG (3)

No Format Ever Dies

Cassette fan alert: unlike your local humongobox retailer, we have storage containers for standard audio cassettes, and at 1978 prices. You get (2) packs of (3) translucent cassette boxes, 4-1/2" x 4-1/4" x 9/16" with locking tabs so they hook together, plus a frame/handle with a belt clip that they'll hook onto. Now go make us a mix tape. We're fond of Bo Diddley, Janis and The Kinks.

accent

PORTABLE AUDIO CASSETTE CASES

No Format Ever Dies

Cassette fan alert: unlike your local humongobox retailer, we have storage containers for standard audio cassettes, and at 1978 prices. You get (2) packs of (3) translucent cassette boxes, 4-1/2" x 4-1/4" x 9/16" with locking tabs so they hook together, plus a frame/handle with a belt clip that they'll hook onto. Now go make us a mix tape. We're fond of Bo Diddley, Janis and The Kinks.

accent
$1.95 PKG (2)

Turn It Off Before It Melts!

From Therm-O-Disc, this thermal cut-off switch is N/C (normally closed) by definition. (Thermal cut-offs are what keep your coffeepot from burning your house down.) This one shuts down between 221°F (105°C) and 248°F (120°C) and measures 5/8" dia x 9/16" thick, with (2) axial terminals.

accent

THERM-O-DISK THERMAL CUT-OFF

Turn It Off Before It Melts!

From Therm-O-Disc, this thermal cut-off switch is N/C (normally closed) by definition. (Thermal cut-offs are what keep your coffeepot from burning your house down.) This one shuts down between 221°F (105°C) and 248°F (120°C) and measures 5/8" dia x 9/16" thick, with (2) axial terminals.

accent
$2.95 PKG (3)

Showing 73–90 of 224 results