First Watt F3 (please only EU)

[manniraj]

Sent you a PM.

 

[badrisuper]

Received the boards. Thanks carsten

Badri M

 

[oyvind]

Boards received here as well. Thanks Carsten!

Oyvind

 

[manniraj]

A quick question regarding measuring the Vgs of the LU1014D. Do we need to make a schematic version of what NP posted on the original F3 build thread and also in the Jeff's doc uploaded in the google drive to test the Vgs or can we use something like this transistor tester ?

Thanks

 

[JeffYoung]

I normally use a tester like that for low-current input devices (such as 2SJ74s and 2SK170s). However, the battery can't source enough current to test at the range we want for output devices (such as the IRFP240 and IRFP9240).

The F3 is a funny beast in that it's single stage, so the LU is both the input device and the output device. But since it has to run a lot of current as the output device, the test rig is the way to go.

Cheers,
Jeff.

 

[va411]

Hi all,

only two sets of pcbs left, if interest please contact me.

Hello Carsten,

PM sent,

Regards.

 

[Juntuin]

Got ’em. Psu pcb was pleasant surprise, thanks Carsten!

 

[carsten.witt]

Last board set is free again.

 

[JeffYoung]

My front plate.

(For non-native English speakers "tribute act" describes a band that plays covers of other bands' songs.)

 

[ed linssen]

Hi Jeff!
Very nice. You seem to you have original cooling fins as well!

Ed

 

[carsten.witt]

Looks very nice and above all the play with the words.

 

[blackdod]

Very cool!!

 

[tborzic]

Arrived
Danke Carsten!

 

[carsten.witt]

Now, all sets are gone!

 

[dBel84]

Front plate looks great Jeff.. dB

 

[ed linssen]

Big rectangular carton arrived today. Content looking great!
Thanks Carsten

 

[Malvin]

wanted to report that my package was delivered about a week ago. bz week. thank you very much Carsten!

 

[vasillis]

Arrived
Thanks Carsten

 

[CeeVee]

My PCBs arrived, Thanks Carsten

 

[mjensen]

Package came today. Thank you so much for doing this.