The following warnings occurred:
Warning [2] count(): Parameter must be an array or an object that implements Countable - Line: 795 - File: showthread.php PHP 7.4.33 (FreeBSD)
File Line Function
/showthread.php 795 errorHandler->error





Post Reply 
Sharp Elsi Mate EL-8118 from the 70's in Japan: yet another VFD based calculator
02-28-2015, 08:46 AM
Post: #1
Sharp Elsi Mate EL-8118 from the 70's in Japan: yet another VFD based calculator
This unit is in reasonable condition for its age. The case is intact, except a tiny hair line close to the power adapter jack.

The calculator was used extensively, as the worn keyboard membrane shows, but all the keys still register fine as long as we press it firmly.

From the back engraved label:
Rating: (DC) 3V 0.3W
(Dry Battery SUM-3 x 2) 3V
(Rechargeable Battery EA-18B) 2.4V
Or (AC Adapter / Charger EA-17E) 3V
Sharp Corporation
Made in Japan

An additional very worn silver sticker label informs about the patents involved in the manufacturing process.
"Manufactured under one or more of the following patents:
USA ..... UK ..... CANADA ..... "

Hardware details:
- The VFD is bright as new, thanks for the installed excellent FUTABA 9-ST-12 unit.
- The high quality electrolytic capacitors are from Nichicon - They measure fine after more than 40 years!
- 28 DIP IC Hitachi HD37351 SoC, made in 1976 I believe.
- The high voltage transformer was made by TDK Japan.
- The current consumption on this unit is:
52mA after power on (only one digit lit).
65mA with all digits lit.



[Image: Sharp_EL-8118_001.jpg] [Image: Sharp_EL-8118_002.jpg] [Image: Sharp_EL-8118_003.jpg]

[Image: Sharp_EL-8118_005.jpg] [Image: Sharp_EL-8118_012.jpg] [Image: Sharp_EL-8118_014.jpg]

[Image: Sharp_EL-8118_016.jpg] [Image: Sharp_EL-8118_017.jpg] [Image: Sharp_EL-8118_024.jpg]

[Image: Sharp_EL-8118_025.jpg]

Jose Mesquita
RadioMuseum.org member

Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
Sharp Elsi Mate EL-8118 from the 70's in Japan: yet another VFD based calculator - jebem - 02-28-2015 08:46 AM



User(s) browsing this thread: 1 Guest(s)