Found an identity test in the wild. These chips are in a $13.99 assortment kit. How many can you identify?
Me: 1/13
- LM324
- LM358
- LM386
- LM393
- NE5532
- NE555
- PC817
- ULN2003
- ULN2803
- ICL7660S
- JRC4558
- LM339
- TDA2030AN
- TDA2822D
- PT2399
- UC3842AN
- UC3843AN
Conversation
Engineering is 5% human factors, 15% physics, and 80% stamp collecting.
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My knowledge is dated and unreliable as my memory. Is the 555 a timer? And the 339 an Op Amp? I don't recognize the rest but I did mostly analog work back in the day.
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Quad opamp
Dual opamp
Audio power amp
Comparator
Hi-fi opamp
555 Timer
?
Darlington driver x6
?
? Suspect a linear chip
?
Comparator
?
?
?
Switchmode control ic
Ditto, current mode
So maybe 11 out of 17, perhaps?
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PC817 - optocoupler
ULN2803 - relay driver
ICL7660S - voltage converter
JRC4558 - op amp
LM339 - voltage comparator
TDA2030AN - audio amplifier
TDA2822D - audio amplifier
PT2399 - delay/echo chip
UC3842AN - pulse width modulator
UC3843AN - " "
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