Electronic Components

Once again: Looking for help with identification of semiconductors (ICs)

Hi, I'm counting on your expertise once again. Does anyone here have any information about the following three parts, w...

0 comments posted 2mos

posted by reinhard.zwirner

0 comments posted 2mos posted by reinhard.zwirner

IC aging

I'm curious about lifetime of IC's from the 1980's. Has there been any published work on degradation of stored IC's of...

3 comments posted 8mos

posted by wb8foz

3 comments posted 8mos posted by wb8foz

slide on wire insulation?

Hi, I'm doing some delicate rewiring inside some ancient aviation simulator equipment. For the shorter soldered connect...

2 comments posted 8mos

posted by christopher

2 comments posted 8mos posted by christopher

Pilot lamp specifications

Hi, Within part lists of electronic circuits pilot lamps are often specified by numbers (like "#46"). Is there a table...

7 comments posted 8mos

posted by reinhard.zwirner

7 comments posted 8mos posted by reinhard.zwirner

Another component question

Hi, It would be great if anyone here had data for this TI transistor. My Far Eastern component tester (like eBay.com 396...

1 comments posted 9mos

posted by reinhard.zwirner

1 comments posted 9mos posted by reinhard.zwirner

AGM batteries

Hi, I live in a cold weather region where temps drop to -40 deg F or colder during the worst part of the winter, and I...

2 comments posted 9mos

posted by christopher

2 comments posted 9mos posted by christopher

Question regarding the identification of a component

Attention: fup2! Hello, In an older power supply unit for GM counter tubes, the high voltage (max. 1 kV) is generated b...

23 comments posted 11mos

posted by reinhard.zwirner

23 comments posted 11mos posted by reinhard.zwirner

KA7500 vs TL494

Chinese commodity power supplies have tended to use recognizable configurations from times gone by. In doing so, it's e...

0 comments posted 1yr

posted by legg

0 comments posted 1yr posted by legg

Electrolytic Cap Voltage

I replaced a set of 500V / 100uF caps used in a HV doubler off a power supply that in the end generates about 900V from...

1 comments posted 1yr

posted by techforce

1 comments posted 1yr posted by techforce

Tantalum Capacitors in Audio

Someone said Tantalum caps in audio circuits are not as good as traditional electrolytics? Is this true? I was told bi-...

1 comments posted 1yr

posted by tech

1 comments posted 1yr posted by tech

SRFJ7044 Mosfet

Looking for a datasheet on this obsolete MOSFET SRFJ7044 SRF-J7044

0 comments posted 2yrs

posted by tech

0 comments posted 2yrs posted by tech

ST TOF register map? (VL53L0x)

I'm trying to work up a project using these neat laser TOF sensors from ST, however none of the documentation I have fo...

0 comments posted 2yrs

posted by uucp

0 comments posted 2yrs posted by uucp

unidentified connector

Can't get a name for this connector. It looks like a miniature version of an ancient signal socket, last seen on signal...

2 comments posted 2yrs

posted by legg

2 comments posted 2yrs posted by legg

Help ID'ing two bridge rectifiers and one (obvious) switching converter IC

Dear experts, trusting in your vast knowledge and good memory I dare to ask for help identifying the following three co...

0 comments posted 2yrs

posted by reinhard.zwirner

0 comments posted 2yrs posted by reinhard.zwirner

NPO limits

I've wondered what limits NPO capacitor value to 0.1uF without manually stacking multiple devices in parallel. Is there...

1 comments posted 2yrs

posted by neo5bass

1 comments posted 2yrs posted by neo5bass