ATiny-4

[Geo]

Dear 1843 thanks for your message. I will try to register to RS and to purchace the components.
I want to ask you why you like the Miner-2. As i see at Pulsedetectors page the Atiny-4 has the best depth (if it is real) of all the detectors.
Do you have constructed any detector from Pulsedetectors???? Who is the output comparing with DeltaPulse or Pulsestar???
Regards

[suxfan]

?

You have right but i want to make it exactly as is because it says that can detect at very large depth so i want to be sure for the components when it will not detect at this depth

This optron how can help you for a long depth ?
I think you lost many nanosecond with any optron but if you use high speed transistor this nanosecond may be not so much.
But it's your choice

[Max]

Why you don't use directly transistor like this circuit:
https://www.geotech1.com/thuntings/a...1&d=1195453471

Hi,
there could be other reasons... apart keep commutation fast. When you use a mosfet device is really safe using the circuit you posted by picture. One can use also other things , of course.

With large IGBT things could be a little more complex. You have to consider that circuit of IGBT could deliver very strong pulses (also several 10s of amperes) to coil , then you have a very fast switchoff... that means you'll get hundreds (or maybe also thousands) volts on reverse polarity spike.

Then you must consider that any closed path between gate of IGBT and collector could give you commutation in unwanted time interval after switchoff... running device over safe operating area (SOA) and thus giving , in most cases, its destruction. Same things could happen if spike will propagate to logic IC that gives timings generating erratic pulses or burning output of it.

That's why maybe they choose using an high insulated driver (4KV if I remember well) that drive the gate by opto-coupler and not directly. That way they are sure timing IC damages at output or erratic will be not involved in failure of TX stage and IGBT will be always timed the right way.

I've posted too similar pictures... but one must have clear what to do with them and what to avoid before wire up.

Best regards,
Max

[Max]

What problem is this with components !!!!!!
I must order from 3 shops, so to buy 3 IC's.
I saw at mouser.com. Ohh very good, i found the HCPL3120. I put 3 parts in the basket and i asked for a ICL7660. Not in stock???????? It is not possible i said. I asked for a ATTINY15L. Not in stock?????????
I asked for a LF442. Ohhh yes it returned it....... but no.... it was a maybe similar to LF442.
What is happens????
I went to Conrad.de.
About the same.
HCPL3120........ Ohhh yes, more expensive but it had it.
Ok. Now time for ICL7660. Not in stock
Never mind i said. Lets look for ATTINY15L. Ohh yes it had it. But ohhh not at DIP8 socket.
I dont know what to do. I want to order all my components from one shop. Where is the bad????
But it is so difficult
Regards
Ohh Ap i just saw your email about components. Thanks

Hi,
yes... mouser.com haven't icl7660 but just replacement by other brand.

But you must consider that icl7660 is now obsolete... so not so easy to find: better if you search for some newer like TC7660HCPA by Microchip... that's the hi-freq. version.

But if you wanna be very close to schematic... you have to find ICL and other things somewhere else than mouser (they have limited stock). Try with Farnell.com or Digikey or some other european distributor like conrad.de.

Kind regards,
Max

[Geo]

This optron how can help you for a long depth ?
I think you lost many nanosecond with any optron but if you use high speed transistor this nanosecond may be not so much.
But it's your choice

Hi suxfan.
Simply i want to make ATINY4 at first very close to schematic, and later the modifications
Regards

[Geo]

Hi Max.
The only way is to order the components from 2 or 3 suppliers. Never mind....... what can i do
Regards

[Oscar]

Hi Everyone,

Do you have part list for ATiny-4 as Pulsedetektor.de site does not list the resistors and capacitors values. As I understand, they will list components values in the future.

Thanks

Oscar

[1843]

Dear 1843 thanks for your message. I will try to register to RS and to purchace the components.
I want to ask you why you like the Miner-2. As i see at Pulsedetectors page the Atiny-4 has the best depth (if it is real) of all the detectors.
Do you have constructed any detector from Pulsedetectors???? Who is the output comparing with DeltaPulse or Pulsestar???
Regards

Simply because a PI which doesn't have DISC is a TRASH detector!

Regards!

[1843]

Hi Max,

The new versions of 7660 can be run at 35kHz. Is it better to use that frequency?
What about the GS4 DC/DC convertor ? (Its frequency is about 83KHz)

Best regards,
1843

Hi,
yes... mouser.com haven't icl7660 but just replacement by other brand.

But you must consider that icl7660 is now obsolete... so not so easy to find: better if you search for some newer like TC7660HCPA by Microchip... that's the hi-freq. version.

But if you wanna be very close to schematic... you have to find ICL and other things somewhere else than mouser (they have limited stock). Try with Farnell.com or Digikey or some other european distributor like conrad.de.

Kind regards,
Max

[aft_72005]

Do you have part list for ATiny-4 as Pulsedetektor.de site does not list the resistors and capacitors values. As I understand, they will list components values in the future.

Hi Oscar
You can get part list at: http://www.pulsdetektor.de/apboard/main.php

[Geo]

Hi 1843.
From one side you have right, But i need a very power Detector. From PulseDetector.com site, ATiny4 is the most powerfully.
Another way is to construct Atiny4 and the Miner-2
What do you say?
Regards

[Geo]

Hi Everyone,

Do you have part list for ATiny-4 as Pulsedetektor.de site does not list the resistors and capacitors values. As I understand, they will list components values in the future.

Thanks

Oscar

Hi Oscar.
I attach here the part list that i found at Pulsedetectors Forum.
I will try to build the ATiny4 from this list.
Now i am looking to order the components. I am not hurry because i paint my Lab and for 10...15 days i can't do anything

[1843]

Hi Geo!

I seriously want to make a Miner-2. But I have problem with obtaining its parts.
I have a friend in Germany, he will send them to me after 2 monthe..

ATiny-4 is good but we don't have an original parts_list for it...

Regards!

[Oscar]

Thanks aft_72005!

By the way, RS Compnents and Farnell in Australia have all parts for ATiny-4 but expensive.

Hi Oscar
You can get part list at: http://www.pulsdetektor.de/apboard/main.php

[Max]

Hi Max,

The new versions of 7660 can be run at 35kHz. Is it better to use that frequency?
What about the GS4 DC/DC convertor ? (Its frequency is about 83KHz)

Best regards,
1843

Hi,
the new version is good cause is more efficient than previous cause can run at about four times previous max freq. limit.

A good point is between 40KHz and 100KHz for that things. That way converter will provide good performances.

A bad example is bandidoII converter (running at 5KHz) that is very low efficient... that's why in some modded schematics converter is now 7660 based.

About GS4 I think it is good as is...with 555 and other stuff. There are a lot of quad op amp IC to power there.
Only drawback is about some huge noise from that converter... but there are filters on power lines.

Best regards,
Max