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18650 for 3.0 v application ?

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elektroda.net NewsGroups Forum Index - Electronic for beginners - 18650 for 3.0 v application ?

Andy
Guest

Tue Jan 15, 2019 7:45 pm   



I have a door bell that uses 2 aa batteries.

Would a 18650 work in such an application.

I don't know if 4.1 volts would be too high.

Thanks,
Andy

David Snowdon
Guest

Tue Jan 15, 2019 9:45 pm   



How about the 18650 in series with a Si diode, such as
a 1N4001 ? The 0.6V drop should reduce the voltage
sufficient to be considered safe.

David

---
Andy wrote:
Quote:
I have a door bell that uses 2 aa batteries.

Would a 18650 work in such an application.

I don't know if 4.1 volts would be too high.

Thanks,
Andy


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

Andy
Guest

Wed Jan 16, 2019 5:45 pm   



On Tuesday, January 15, 2019 at 2:26:15 PM UTC-6, David Snowdon wrote:
Quote:
How about the 18650 in series with a Si diode, such as
a 1N4001 ? The 0.6V drop should reduce the voltage
sufficient to be considered safe.

David

---
Andy wrote:
I have a door bell that uses 2 aa batteries.

Would a 18650 work in such an application.

I don't know if 4.1 volts would be too high.

Thanks,
Andy

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


Ok, thanks.

Andy

Andy
Guest

Fri Feb 15, 2019 3:45 pm   



On Tuesday, January 15, 2019 at 2:26:15 PM UTC-6, David Snowdon wrote:
Quote:
How about the 18650 in series with a Si diode, such as
a 1N4001 ? The 0.6V drop should reduce the voltage
sufficient to be considered safe.

David

---
Andy wrote:
I have a door bell that uses 2 aa batteries.

Would a 18650 work in such an application.

I don't know if 4.1 volts would be too high.

Thanks,
Andy

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


How would I wire that up?

It's been a while.

Andy

Look165
Guest

Fri Feb 15, 2019 3:45 pm   



Why not a 7803 with just a filtering cap ?

In your need, you would need 2*1N4148 or 1N4448, that's enough.

Andy a écrit le 15/02/2019 à 15:32 :
Quote:
On Tuesday, January 15, 2019 at 2:26:15 PM UTC-6, David Snowdon wrote:
How about the 18650 in series with a Si diode, such as
a 1N4001 ? The 0.6V drop should reduce the voltage
sufficient to be considered safe.

David

---
Andy wrote:
I have a door bell that uses 2 aa batteries.

Would a 18650 work in such an application.

I don't know if 4.1 volts would be too high.

Thanks,
Andy
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
How would I wire that up?

It's been a while.

Andy


Andy
Guest

Fri Feb 15, 2019 4:45 pm   



On Friday, February 15, 2019 at 8:40:41 AM UTC-6, Look165 wrote:
Quote:
Why not a 7803 with just a filtering cap ?

In your need, you would need 2*1N4148 or 1N4448, that's enough.

Andy a écrit le 15/02/2019 à 15:32 :
On Tuesday, January 15, 2019 at 2:26:15 PM UTC-6, David Snowdon wrote:
How about the 18650 in series with a Si diode, such as
a 1N4001 ? The 0.6V drop should reduce the voltage
sufficient to be considered safe.

David

---
Andy wrote:
I have a door bell that uses 2 aa batteries.

Would a 18650 work in such an application.

I don't know if 4.1 volts would be too high.

Thanks,
Andy
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
How would I wire that up?

It's been a while.

Andy


I already ordered the other diode.

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