1 Topic by tizenhp (edited by tizenhp 2012-01-02 10:14:45)

Topic: Alimentation hp-65 / adapter for HP-65

Bonjour Monsieur Laporte,

Je viens d'acheter une hp-65 (35 ans d'attente, d'où mon pseudo ;-) .
Avant de la brancher (elle m'a été vendue pour être en état de marche, ce dont je n'ai aucune raison de douter), j'ai vérifie les tensions de sortie du HP82010A fourni.
Celles-ci sont de 5.36 et 15.35 volts à vide , ce qui me semble bien supérieur aux valeurs nominales (4 et 4.2, mais en charge).
Pouvez-vous vérifier si vous disposez de ce type d'adaptateur que vous obtenez ces valeurs à vide ?
Je crains que l'ancien propriétaire m'ait fourni un adaptateur neuf (aspect et pliage du fil), mais défaillant(à son corps défendant).
En vous remerciant encore pour votre site toujours aussi captivant, et en vous souhaitant une bonne et heureuse année 2012.
Cordialement,
Olivier

For people who do not read French:
I just bought a 65-hp (35 years of waiting, hence my nickname;-).
Before connecting (it was sold to me to be in working order, which I have no reason to doubt), I checked the output voltages of the HP82010A provided.
These are 5.37 and 15.50 volts vacuum, which I think is well above the nominal values ??(4.2 and 4).
Can you check if you have this type of adapter you get these values ??to empty?
I fear that the former owner provided me a new adapter (aspect and bending of the wire), but failed (without knowing).
Thanking you again for your site just as exciting, and wishing you a happy new year 2012.
Sincerely,

Re: Alimentation hp-65 / adapter for HP-65

tizenhp wrote:

Bonjour Monsieur Laporte,
I just bought a 65-hp (35 years of waiting, hence my nickname;-).
Before connecting (it was sold to me to be in working order, which I have no reason to doubt), I checked the output voltages of the HP82010A provided.
These are 5.37 and 15.50 volts vacuum, which I think is well above the nominal values ??(4.2 and 4).
Can you check if you have this type of adapter you get these values ??to empty?
Sincerely,

Hi Olivier,

I could check out roughly the same values on two Classics adapters (82002A).

There are 2 different circuits
- a voltage regulator to feed the calc,
- a constant current source to charge the nicads.
(See on the site the discussion and here
http://jacques-laporte.org/forum/viewtopic.php?pid=82
on this forum).

1) Voltage regulator

I measure 4.15 loaded and 5.85 unloaded.

2) Constant current source

Unloaded voltage = 16v
Loaded = 4.15
Current 50.9 ma

Seems your data : 4.2 and 4V  are quite nominal.
I hope all this will help.

Is the HP65 working on batteries?
Thanx for the best wishes.

Bonne année 2012!