Find a voltage regulator?

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bj8807

New Member

• Feb 9, 2009

• #1

I am new to the whole break down of electronic devices and am taking apart a radar detector, and am wondering if anyone could tell me which parts are what such as a voltage regulator? I will upload the pic if you can assist me. Thanks.

 

Hero999

Banned

• Feb 10, 2009

• #2

I'm not sure what you're asking.

Check Wikipedia to find out how voltage regulators work.
Voltage regulator - Wikipedia, the free encyclopedia

Typical examples of voltage regulator ICs are the LM317 and LM7805.

 

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bj8807

New Member

• Feb 11, 2009

• #3

Voltage Regulator on Board

here is the circuit board if anyone can tell me what part is the voltage regulator. Thanks

 

Attachments

• DSC00554.JPG

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K

kchriste

New Member

Forum Supporter

• Feb 11, 2009

• #4

What does it say on U603, which is in the upper right hand corner? I suspect this is the regulator and that D301 may be the "idiot diode". There may be parts on the other side of the PCB that may be worth looking at too.

 

Last edited: Feb 11, 2009

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bj8807

New Member

• Feb 12, 2009

• #5

What do you mean by idiot diode? Whats its purpose? Thanks

 

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bj8807

New Member

• Feb 12, 2009

• #6

The part to the right of U603 is a button

 

Andy1845c

Active Member

• Feb 12, 2009

• #7

What does it say on the big black D shaped part to the left of U603?

What do you want to find it for? Are you hoping to take it out an re-use it?

 

K

kchriste

New Member

Forum Supporter

• Feb 12, 2009

• #8

bj8807 said:

What do you mean by idiot diode? Whats its purpose? Thanks

Click to expand...

It is there to prevent damage when an "idiot" connects the device with the reverse polarity.

bj8807 said:

The part to the right of U603 is a button

Click to expand...

I know. I'm interested in U603 which is the object Andy1845c just described.
On silkscreens, the letter U at the start of an ID refers to an IC. D a diode, C a capacitor, Q a transistor, etc.