Further to my EG order (post#
2213),
I’ve sorted a free grab bag of LEDs (mostly yellow, a few red and a smattering of white and one blue) and
sorted two boxes ($5/ea, 50% off) of “grab-bag” ICs:
View attachment 39311
Multiples of two or more are down flat, random singles are leaned against the PCB-holder at the back.
SKIP the following indented list, unless you want to be bored reading my redundant entries...
I've got
- 4x 555-timer ICs — the only thing I found immediately recognisable. Hardly worth the investment just yet.
- A baker's dozen of BL1240 — turns out to be "a monolithic integrated circuit designed to replace mechanical bell in telephone sets in connection with an electro-acoustical converter. It can drive directly a piezoceramic converter (buzzer) or a dynamic loudspeaker." So maybe there's a noise-maker project that can use one of these.
- 3x NE592N8 — "a monolithic, two-stage, differential output, wideband video amplifier." Gamble has yet to pay off.
- 2x SN74163N — "Synchronous 4-bit binary counter" ...
- 5x DM7446AN — These ICs "feature active-LOW outputs designed for driving common-anode LEDs or incandescent indicators directly."
- 2x CD4093BE — A four Schmitt-trigger circuit. Finally something useful, for an Atari Punk Console or Parasit noise-maker etc.
- 2x DM7425N — "Dual 4-Input NOR Gate (with Strobe)"
- 8x SN7486N — Logic => Gates => XOR (Exclusive OR) Gates
- 6x SN74148N — Encode 8 Data Lines to 3-Line Binary(Octal)DApplications Include:− n-Bit Encoding− Code Converters and Generators
- 4x CD4503BCN — CMOS HEX Buffer, 3 state non-inverting type, high voltage (20v). Can't think of any use, already had 3 in my IC stash.
- 6x DM7473N — Dual Master-Slave J-K Flip-Flops, with Clear and Complementary Outputs
- 5x SN7425N — "Dual 4-Input NOR Gate (with Strobe)", just like the DM7425N in the first group above.
- 10x 74157PC — Multiplexer, 4-Func, 2 Line Input, TTL, PDIP16
- 4x DM7446AN — different batch-code from the first group's 5 of this IC for driving LEDs. Yawn.
- 4x SN74LS375N — D-Type Transparent Latch 4 Channel 1:1 IC Differential 16-PDIP
- 3x T74LS158B1 — Quad 2-input Multiplexer (inverting)
- 4x SN74LS155AN — Monolithic Transistor-Transistor-Logic (TTL) dual 1-line to 4-line demultiplexer
- 4x SN74LS375N — 4-bit bistable latch
- 3x DM74LS160N — Synchronous Presettable BCD Decade Counter
- 3x SN74F258N — Quadruple 2-line to 1-line data selector/multiplexer, with 3-state outputs
The back row:
- DM7473 — batch code different from above, should've chucked it in with group 2's batch of this IC.
- DM7425N — yet another multiplexer to add to the first group.
- DG412DJ — monolithic quad analog switches was designed to provide high speed, low error switching of precision analog signals.
- N7486A — Quadruple 2-input exclusive-or gates
- DM7473N — Guess I should look at part #s rather than batch #s — another one to add to the 2nd group above
- SN7486N — It's a Quadruple 2-input exclusive-or gates, just like the 2nd entry above.
- SN7486N — different manufacturer from the ones above.
- 74148N — another to add to the ICs of its kind in the 2nd group above.
- SN7473N — I really must sort by the IC codes and not the batch codes next time.
- SN7486N — Ditto.
I searched my hard-drive with every chip code above in the list, to see if I got a hit for any of them in my cache of build-docs.
Anybody got any hacks for the BL1240 or NE592 chips? Those are the only ones that I can see maybe using them for purposes they weren't designed for, even if they didn't come up in any build docs.
The only hits worthwhile were the 555 and 4093.
So the 555 is 13¢ at Tayda (subtotal $0.52), and
the 4093 is 83¢/ea at mouser (subtotal $1.64) OR 40¢ ea at Tayda so let's go with Tayda ($0.80 subtotal)
All I got was $1.32 of useful-to-me chips, didn't even break even.
I gambled $10 on ICs and lost.
Glad it wasn't $20.
I’m a sucker for a deal.
two curiosities and something useful.
From what I've seen in videos I'd probably love it. I think the thing that would make me buy one is if the portamento can do do the theremin thing
