Electronic Components

Use SCR as rectifier

To use an SCR as a rectifier can you just tie the gate to the anode or should you use a diode to prevent reverse curren...

7 comments posted 15yrs

posted by regor

7 comments posted 15yrs posted by regor

What's this old cerdip chip?

Wondering what this 14 pin cerdip chip is, markings: | 1 1124 1155B | | 0 F 7331 < | 4 | The '104' text baseline is rot...

10 comments posted 15yrs

posted by omg

10 comments posted 15yrs posted by omg

YEHtek converters datasheet / info (CUS-18141 & MUS-05051F)

Hi all Can anyone tell me about: CUS-18141 MUS-05051F power? DC/DC? voltage? pins layout? datasheet? Sonnich

1 comments posted 15yrs

posted by sonnich

1 comments posted 15yrs posted by sonnich

LCD interchageability between brands etc.

was wanting to know if the there is enough similarity between laptops brands and displays that they can be wired to wor...

2 comments posted 15yrs

posted by divx.dude

2 comments posted 15yrs posted by divx.dude

Help identifying components

Black diode, smaller than 1Nxxx, green band and green test: "R47". Glass diode with yellow band. No other markings. Than...

24 comments posted 15yrs

posted by invalid

24 comments posted 15yrs posted by invalid

Memory backup batteries

I have various bits of 20-year-old equipment with memory backup batteries. These are all NiCd, and are quite capable of...

4 comments posted 15yrs

posted by theom+news

4 comments posted 15yrs posted by theom+news

Exceeding maximum absolute voltage

By how much can the maximum absolute voltage of 2.3V for DDR2 DRAM chips be exceeded? I don't intend to do it, but I ha...

15 comments posted 15yrs

posted by larrymoencurly

15 comments posted 15yrs posted by larrymoencurly

FS: Rare Texas Instruments TIL306 Numeric Display w/Logic NOS

This is a solid state display used in some shortwave communication transceivers and commercial broadcast transmitters a...

2 comments posted 15yrs

posted by mweissXSPAM

2 comments posted 15yrs posted by mweissXSPAM

Looking for a the following items

CTS256 - text to speech convertor from somewhere 1982 Sinclair MK14 (eighties) Sinclair ZX80 (eighties) Sinclair MDA mo...

3 comments posted 15yrs

posted by georgedb

3 comments posted 15yrs posted by georgedb

PCB layout software

What is a good reliable PCB layout software, open source or freeware, if not the best, that is available? last posting...

0 comments posted 15yrs

posted by adamsmith

0 comments posted 15yrs posted by adamsmith

Detectable Ballast Interference

Sorry for the Xpost. There is an ongoing argument about ballasts giving off detectable interference. https://www.icmag....

29 comments posted 15yrs

posted by rmcg

29 comments posted 15yrs posted by rmcg

converting a pcb to schematic.

I have 2 small pcbs about 3inches by 2 inches. One had 3 op amps and the other has 3 ic, and several transistors along...

6 comments posted 15yrs

posted by radium1212_at_gmail_dot_com

6 comments posted 15yrs posted by radium1212_at_gmail_dot_com

Nice "build -in" AC meter

Could cost a bit less. Could be stocked a bit better than they are. Could have a faster lead time for restocking, given...

0 comments posted 15yrs

posted by MyNameForward

0 comments posted 15yrs posted by MyNameForward

TOY Chips

Hello, I am designing a system in which I need to generate a timestamp in order to insert a checksum, an ID, and other...

7 comments posted 15yrs

posted by adamsmith

7 comments posted 15yrs posted by adamsmith

Small P clips - not exactly electronic

I am designing a small PCB (about 15 x 60mm) which will have an M3 mounting hole each end. I need to fasten a cable (pr...

2 comments posted 15yrs

posted by nospam

2 comments posted 15yrs posted by nospam