Protect Your Workbench From Costly
Repairs Due to Over Current Damage With:
Efuse
(Electronic Fuse)
Patent Pending
Precision Current Limiting by:
CallSaver Corp
Call or email for special orders
1-304-203-5957 or
mailto:callsaver@iolinc.net
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Saves hundreds of dollars of damage on repairs over
time. |
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Adjustable in tenths of an amp from 0.1amp to 9.9 amp on
Leds |
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Limits the current to the device under test for safe power up. |
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The Efuse will trip and turn the power off faster than the
internal fuses in the device under test saving much time and
expense in damaged parts. |
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Trips in <1ms in (fast mode) and <250ms in delay or
(slow
blow mode). |
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Shows the operating current in tenths on Leds of the device under
test. |
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Holds the last current value in tenths on Leds after the
device under test trips. |
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An economical safeguard for engineers and technicians
alike on the bench or in the field. |
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Comes already assembled, calibrated, and tested or in
kit form. |
"History and Invention from Necessity"
I own a
Television Service Center and whenever we install new parts into a TV
Receiver, we need to be sure that it is safe to power up the TV set
after a repair. If there are still unknown problems in the TV, there can
be excessive current draw and that can destroy the parts you have
installed as well as other parts. That is what was happening to us on
occasion. So I needed a way to quickly turn the power off when the set
under test still had a problem, thus the idea of the Efuse was born!
First I built a slower non-digital version of the Efuse, it had a rotary
switch for setting the current and was adjustable from 0.5 to 6.0 amps.
When the set that is powered by our Efuse is turned on, if there is
still a problem in the set, the Efuse shuts the power off almost
instantly. The first Efuse unit needed a lot of improvements because it
was too slow and was not very precise in the current settings, (current
was set on a mechanical rotary switch without LEDS).
After bread boarding and re-design, we went to work on a new CMOS
Micro- controller Version for precise and fast action. Now you can
adjust the Efuse to any current setting from 0.0 to 9.9 amps in tenths
on LEDS ( We can modify the Efuse for use at higher current ratings ).
The new Efuse is very fast acting, it shuts the power off in less than 1
ms and the current settings are accurate. The Efuse displays the
operating current in amps of the device under test on the LEDS while it
is on. Should the operating current exceed the users preset level, the
power is removed from the device under test in 1 ms ( In Normal Mode)
simulating a fast-blow fuse and 160ms (In Delay Mode) simulating a
slow-blow fuse. The Efuse will hold the last current value on the Leds
when tripped. We can precisely imitate an actual fuse curve in the
programming software of the chip, imitating chemical or wire fuses. The
Efuse can be used for consumer or industrial applications. The Efuse has
saved a lot of time and expense on the bench at our shop in the last 5
years and would be a excellent device on the bench for Engineers and
Technicians alike.
| The cost to build the Efuse Kit is
economical when considering that a comparable device on the market
that we found sells for over $900.00. Our Programmed Microcontroller,
PC Board, All parts ( electronic components included ), Pre-programmed
microcontroller, Bill Of
Material (BOM), Custom made Kit Box and Schematics are available
through CallSaver Corp. for $150.00 Shipping costs are figured
based on US Addresses and applied at checkout.. Please allow 1-2 weeks for delivery.
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| New!!
Now available, our Complete "Efuse" already built, calibrated,
and tested for $199.00 plus S&H. Shipping costs are
figured based on US Addresses and applied at checkout.
Please allow 2-3 weeks for delivery.
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| To build the Efuse using your own Kit box, order the PC Board, BOM
( Bill Of Material, ) Programmed Microprocessor, and Schematics for
$49.95. (Your order the parts on the BOM from the
sources listed.) The Level of skill to build this Kit is
Intermediate . Shipping costs are figured based on US Addresses
and applied at checkout.
Please allow 2-3 weeks for delivery.
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