Need advice (maybe OT)

On 12/14/2011 11:08 AM, Harry H. Arends wrote:

LS,

 

On a design I use four 1N4148 diodes to rectifiers a 20 KHz square signal.

Now I am thinking of replacing it by a rectifier bridge.

 

Does anyone has a suggestion what device to use?

 

Harry

 

It depends on the voltage and current of the circuit.

Just take one of the easy to look up parts vendors by specs and hunt

some down. digkey has a easy to use search for parts interface.

Paul R.

Paul Romanyszyn schrieb:

>> On a design I use four 1N4148 diodes to rectifiers a 20 KHz square signal.

>> Now I am thinking of replacing it by a rectifier bridge.

>>

>> Does anyone has a suggestion what device to use?

>>

It depends on the voltage and current of the circuit.

Just take one of the easy to look up parts vendors by specs and hunt

some down. digkey has a easy to use search for parts interface.

But take care: most rectifier bridges are really slooooow and suitable

for line frequencies only. Maybe it's better keeping the 4148...

What's the reason for your replacement intention?

Tilmann

Harry H. Arends wrote:

LS,

 

On a design I use four 1N4148 diodes to rectifiers a 20 KHz square

signal. Now I am thinking of replacing it by a rectifier bridge.

 

Does anyone has a suggestion what device to use?

 

Harry

You may entertain using diode pairs in two sot packages.

Warren

--

Viewed / responded via the newsgroup at

news.cadsoft.de

I need more space on the board.

Maybe I could use a SMD version.

"Tilmann Reh"  schreef in bericht news:jcaugm$qev$1@cheetah.cadsoft.de...

Paul Romanyszyn schrieb:

>> On a design I use four 1N4148 diodes to rectifiers a 20 KHz square

>> signal.

>> Now I am thinking of replacing it by a rectifier bridge.

>>

>> Does anyone has a suggestion what device to use?

>>

It depends on the voltage and current of the circuit.

Just take one of the easy to look up parts vendors by specs and hunt

some down. digkey has a easy to use search for parts interface.

But take care: most rectifier bridges are really slooooow and suitable

for line frequencies only. Maybe it's better keeping the 4148...

What's the reason for your replacement intention?

Tilmann

Harry H. Arends schrieb:

I need more space on the board.

Maybe I could use a SMD version.

--> TS4148 RYTS4148 RY by Taiwan Semi, in 0603 or 0805 chip size.

Eventually, dual diodes are also possible in your application: BAV99 or

the like, two (signal) diodes in one SOT23. That's what Warren suggested.

Tilmann