A closer look at the AF108 bi-polar drive circuit

[sinclairuser]

"whiteselectronics.com" takes you to 2 different web sites depending on whether you're on the left side or right side of the Atlantic. So I cannot see what you see. Used to be I could select the UK web site in the upper-right corner, but that no longer works.

hi carl captured a picture.

[6666]

[ATTACH]47548[/ATTACH]
hi carl captured a picture.

[ATTACH]47548[/ATTACH]

What the heck is a VC10 ?

[Carl-NC]

Possibly a detector for veterinarians. I have one from the 80's that looks similar.

[6666]

Possibly a detector for veterinarians. I have one from the 80's that looks similar.

Ok thanks, most unusual , animals swallowing things ?

[waltr]

0V on schematic, yes, but no 0V rail on the part of the schematic I wish to simulate. Only VE and VC. What this means is that I'll need to make VC into common or ground, and VE set at negative 5V.

Use two Voltage sources in the simulation that connect together as 'GROUND', 0V. Top V source is VC bottom is VE. This will keep LTSpice happy.

[waltr]

. I'm not sure what benefits bipolar pulsing can bring to a beach machine, if any.

No need to have an EFE Sample with bi-polar TX.

[kt315]

The BUY92 ist not a TUP- look in the datasheet

http://pdf.datasheetcatalog.com/data.../487271_DS.pdf

this is not same. related to this schematic BUY92 is in TO247-? case. you give a link on more modern one while BUY92 is obsolete of obsolete,
obsoletest, so internet probably had deleted all info on it.
look attentionally again on the board.

[Andi68]

I thought of another transistor on BUY92,
I can not imagine that there should be no more information.
Especially the old transistors are well documented.
This page shows other data ..
https://english.electronica-pt.com/c...ence?ref=BUY92

[kt315]

you give a link on TO3 (old) case. not same. iwkonik desoldered the board (his pics i put) so he can give pic of the transistor.

[Andi68]

kt, is the board you showed at all from the AF108

[sinclairuser]

Ok thanks, most unusual , animals swallowing things ?

hi bruce thats the one that has a working frequency of 0.3khz, weird or what?.

[kt315]

kt, is the board you showed at all from the AF108

i suspect no answer https://www.geotech1.com/forums/show...7-Whites/page2

[dbanner]

I am currently working on a single side layout. Much work to be done.

[dbanner]

Use two Voltage sources in the simulation that connect together as 'GROUND', 0V. Top V source is VC bottom is VE. This will keep LTSpice happy.

I wasn't much worried about the virtual ground level, was more concerned about the sample delay and tx pulse intervals. That's what I wanted to get at.

[dbanner]

Here is the layout for the timing and control module. I do the modular way for possible experimentation with micro at later stages. Maybe some mods or changes too.