Threshold Pot doesn't work

[h9361]

Thanks for the explanation Carl. That is why it doesn't work well.

Thanks for your complete explanation.
Please forgive me for my questions.
I have a question about IRF740. Unfortunately, it's rare in my country but the IRF840 is more.
Do you think i can use IRF840 instead of it in HH?

[h9361]

Hello
Dear Carl
Please see attached, i'm going to use four 18650 Lithium ion batteries for my HH1.
As you know, voltage of HH is 12V and its ground is +VB. Is it possible to see attached and tell me whether i can the schematic for my HH or not?!
Thanks for your kindness.

[Qiaozhi]

Hello
Dear Carl
Please see attached, i'm going to use four 18650 Lithium ion batteries for my HH1.
As you know, voltage of HH is 12V and its ground is +VB. Is it possible to see attached and tell me whether i can the schematic for my HH or not?!
Thanks for your kindness.
[ATTACH]56659[/ATTACH]

The maximum input voltage for a 7660A is 12V, and for a 7660 it's 10V.
The nominal voltage of your battery pack is 14.4V.

[h9361]

Thanks dear Qiaozhi.
Please see attached, i used a 12V regular.
Do you think it works with the regular?

[Qiaozhi]

Thanks dear Qiaozhi.
Please see attached, i used a 12V regular.
Do you think it works with the regular?
[ATTACH]56660[/ATTACH]

That should work ok.

[h9361]

That should work ok.

Thanks.
For last question, do you think ground pin of regular (middle pin) should be connected to +VB or -VB?

[Qiaozhi]

Thanks.
For last question, do you think ground pin of regular (middle pin) should be connected to +VB or -VB?

Middle pin of the regulator should be connected to -VB.

[h9361]

Middle pin of the regulator should be connected to -VB.

Thank you dear Qiaozhi for your guidance.

[green]

That should work ok.

Wondering why you suggest that should work. His schematic shows ICL7660, rated 10.5V absolute maximum supply volts.

[Carl-NC]

Yes, use the 7660A for 12V. Better yet, replace it with the LTC1144 and you can get rid of the extra 7812.

[h9361]

Yes, use the 7660A for 12V. Better yet, replace it with the LTC1144 and you can get rid of the extra 7812.

Thank you for your supporting.

Please forgive me for my questions.
I have a question about IRF740. Unfortunately, it's rare in my country but the IRF840 is more.
Do you think i can use IRF840 instead of it in HH?

[Qiaozhi]

Wondering why you suggest that should work. His schematic shows ICL7660, rated 10.5V absolute maximum supply volts.

I've already pointed that out. Please see post #168.

[h9361]

I've already pointed that out. Please see post #168.

Post 168 is

The maximum input voltage for a 7660A is 12V, and for a 7660 it's 10V.
The nominal voltage of your battery pack is 14.4V.

not about IRF. Please see again.
Thanks.

[Qiaozhi]

Post 168 is

The maximum input voltage for a 7660A is 12V, and for a 7660 it's 10V.
The nominal voltage of your battery pack is 14.4V.

not about IRF. Please see again.
Thanks.

That was in answer to Green's post, not your's.

[Carl-NC]

IRF840 is fine. It's a little better than the IRF740.