What can I do with this stuff?

[black mariah]

This is always a fun game to play, but it's way more fun when it's someone else doing the thinking.

I have here some UAF42AP's (Universal Active Filter) and some UC3611N's (Schottky diode arrays), and I can't think of a damn thing to build with 'em! Doesn't matter to me what it is, as long as I can get something done. Any suggestions?

[black mariah]

44 views and no replies? I guess I'm not the only one questioning the usefulness of these components.

[analogguru]

You chose the wrong title: "What can I do with this stuff?"

Nobody knows exactly your skills (what you are able to do), so nobody can answer this question.

....But I know, what I can do with this stuff.
So if you still don´t know what to do with this stuff, easily send it to me. 

analogguru

P.S.: got to www.google.com
type in "uaf42" and "datasheet" an look for the result.
normally in the datasheet are some application notes included.

[BlueToad]

maybe the uaf42's could maybe make an envelope filter of some sort. Granted, the filter is the easy part. You could have different sweeps on  the different frequency adjustment terminals, and maybe blend the different output signals. Could be cool. Could be pointless.

[birt]

i've got a big big pile of IC's and transistors i found...

for example these great looking (but probably not usable..) IC's with a little window (2708 and 2732)
metal can CA3035 ic's
CA3094 ic's
MCT2 ic's
BFX37 transistors and quite a lot BFY76 transistors


this is just what i sorted out earlier today, there's much much more

[Barcode80]

okay, so i guess let's make this into a "found parts, what the heck" kind of ongoing thread, like the pics thread i recently was given an old CB radio that was no longer functioning, so i was hoping to get some Ge trannies out of it, but no dice. I did however come across something i've never seen before. it was labelled as a "q" component on the top of the board, so i assume it to be a transistor, and it looks like an average metal can type, but has SIX LEGS?!?!? huh?

[Sir H C]

i've got a big big pile of IC's and transistors i found...

for example these great looking (but probably not usable..) IC's with a little window (2708 and 2732)
metal can CA3035 ic's
CA3094 ic's
MCT2 ic's
BFX37 transistors and quite a lot BFY76 transistors


this is just what i sorted out earlier today, there's much much more

CA3094 - used in the Small Stone, a CA3080 with a darlington output follower.
2708 - 8 k bits eprom, 2732 - 32k bits eprom, need an eraser (or your car's dashboard) and a programmer to use these

Not sure of the others.

[analogguru]

@birt

CA 3035 Ultra-High-Gain Wide-Band Amplifier array
MCT-2 Optocoupler
BFX 37:  Si-PNP   80V/100mA/360mW   ß: 125 - 280/1mA   F< 2,5 dB   Fg> 40Mhz
             Low-Noise Low-Beta PNP-Transistor   very good found
BFY 76:  Si-NPN   60V/50mA/360mW    ß: 30 - 150/10µA    F< 4dB   Fg > 70 Mhz
             That tranny is good to replace Ge-pnp by Si-NPN - you will not find so low-gain si-trannys today


@barcode80

The six-leg stuff can be a quarzfilter if its in a metal-case and doesn´t look like a transistor.

analoguru

[Barcode80]

well, it looks IDENTICAL to a metal can tranny except the number of pins. after i remove it, i'll take pics...

[birt]

optoisolator ic's (like that MCT2 i got or TIL111 or so) only have six pins. it might be an old metal can version?

[jrc4558]

okay, so i guess let's make this into a "found parts, what the heck" kind of ongoing thread, like the pics thread i recently was given an old CB radio that was no longer functioning, so i was hoping to get some Ge trannies out of it, but no dice. I did however come across something i've never seen before. it was labelled as a "q" component on the top of the board, so i assume it to be a transistor, and it looks like an average metal can type, but has SIX LEGS?!?!? huh?

Its a dual transistor!

[Barcode80]

well, i popped it out, threw it on the dmm, and got a Hfe of 11 on both sides. too low to be a trannie?

[analogguru]

If it looks like a tranny, constantin is (half-)right:

It willl be a Dual-FET (matched) used as a mixer to create the IF.

What kind of CB-rig was this ?
And what is a written on this "tranny" ?
must be something like U...  or K....

analogguru

[Barcode80]

not a single number/letter written anywhere on it. this was one of those CB radios you mount in your car. when i get home today, i will post photos.

[birt]

some more stuff i just sorted out:
BSY27
BFY56
2N1711
2N3962

[analogguru]

BSY 27:   a really old "collectors item": Si-Epitaxial tranny produced in the early 60´s by SEL = ITT, used for HF-switching
20V/?mA/200mW   ß>40    Fg: 200 MHz

BFY 56:   produced by SGS and Texas
Si-NPN   45V/1A/800mW    ß: 30-150/150mA   Fg > 40 Mhz

2 N 1711:
Si-NPN   75V/1A/800mW    ß: 100-300/150mA   Fg> 70 MHz

2 N 3962: Low-Noise small-signal
Si-PNP   60V/200mA/360mW   ß: 100-450/1mA  F<3dB  Fg>40 Mhz

analogguru

[birt]

ok i've got 2 questions.
CA 3035 Ultra-High-Gain Wide-Band Amplifier array
as far as i understand this thing has 3 high gain amplifiers. are these like transistors or more like opamps?

and i've got one box i can't relabel since the transistors inside are blank grey with gold pins TO92
the original dymo label of the box says: 355BFY-B-FE
i have no clue what these can be...

[analogguru]

...the transistors inside are blank grey with gold pins TO92...

This seem to be trannys which don´t fulfill the specs 100% (C-E Voltage, leakage current).

In the 70´s they got "unstamped" on the market, someteimes they were "restamped".

For example BC 107 which only could handle 20V instead of 45 Volt were sold as BC 107 S 1.

Telefunken was one of the companys who sold this stuff to "restampers".

grey plastik remembers me to TFK, gold legs must be early 70´s.  European companies changed very fast to tinned legs by plastic trannies (cheaper).  Motorola sold up to the 80´s with gold legs.

HF-Trannies were this time mostly still in Metal can, except BF199, BF 254 an BF 494 range.

grey was mainly used for the BC 167, BC 168, BC 169 range, with different pinout.
So check the pinout and the gain, and use it for anything.  EWvery willl be able to handle 9V-Battery-Voltages

analogguru