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CJMCU-3652 resistor dimensioning

I bought a CJMCU-3652. It is based upon the LT3652 from Linear Technologies. In the datasheet on page 15 there is a description on how to calculate the resistors to properly charge whatever battery ...
Cowboy_Patrick's user avatar
0 votes
1 answer
176 views

Cement Power Resistor PCB Mounting in Vibratory Environment

I'm looking to use a cement type wirewound power resistor on a PCB. We need the short term peak power capabilities that this type seems to provide. It seems the most common are thru hole type, like ...
matth's user avatar
  • 127
1 vote
1 answer
640 views

Identify dead component in notebook battery

Battery name is GARDA31, based on bq29330 and bq8030. Most probably I killed it myself when soldering by shorting terminals with solder wire :( Controller is alive (communicates through SMbus), but ...
Anonymous's user avatar
  • 7,120
1 vote
1 answer
182 views

Can anyone indetify this SMD component?

This is from N9005 phone and i would love to know what SMD component is this. Here is a photo. Thank]1
Mikael's user avatar
  • 13
40 votes
6 answers
14k views

Why do resistors still use color coding?

I always wondered why color coding is still used on resistors in 2014. Here is Wikipedia's word on the original reason why : Colorbands were commonly used (especially on resistors) because they ...
DylanM's user avatar
  • 563