Active Fuse
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Background
What is
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Sound effect
How to use
Fuse is an important part in the electricity supply network
to an equipment, because without the presence of a fuse, maximum current
that can pass through in equipment will exceed the permissible
limit when there is damage in the equipment.
Theoretically, the fuse must have
zero resistance value so that there is no voltage drop when the
fuse has an electric current. But in reality the fuse always has a certain
resistance value depending on the rating and quality of the fuse product.
The existence of resistance to the fuse causes a voltage drop and heat
to the fuse when electrified. Before getting inspired to create Active
Fuse I once did a resistance measurement on the fuse that I poured in a
piece of text and I put that writing in this following link
: http://www.sap.or.id/Measuring_Fuse_Resistance.html
It is not possible for conventional fuses to have no resistance,
because when working to limit current, the conductors in a conventional
fuse must experience three states, namely:
1. Overheating
2. Burned
3. Break up.
In order to perform such three state above, the conductors
in a conventional fuse must have resistance, and the way that the conductors
in a conventional fuse can have resistance is to make these conductors
thin, even thinner than human hair. Conversely, if the fuse is made of
material that has low or zero resistance, then the fuse will not break
when there is excessive current flowing through the fuse.
Conventional Fuse
In the context of the audio world, resistance can result
in a decrease in the sound quality of audio systems that use fuses.
As an innovative response from this reality I was inspired to create
an equipment that I named Active Fuse.
Active Fuse is an equipment that I made with
the aim to replace the conventional fuse that is commonly used in audio
equipment. If a conventional fuse uses a thin conductor, which can be
even thinner than human hair, and this conductor will break when electrified
which exceeds the rating of this conventional fuse, then Active Fuse
uses an Low Resistance Contact Device (LRCD) to disconnect or connect
line electricity to audio equipment .
Inside Active Fuse there is an ampere meter that monitors continuously
the current passing through the audio equipment, if this current exceeds
the desired limit then the control part of the Active Fuse will disconnect
line electricity to the audio equipment.
Overall there are 6 advantages features performed
by Active Fuse compared to conventional fuse, namely:
1. Presetable Current Rating
Current rating on Active Fuse can be set
from be 0.5A to 10A with a resolution of 0.1A
2. Presetable Fuse Response
Responses from Active Fuse can be selected
to work with Fast or Slow Blow responses
3. Turn On Delay
When first turned on, Active Fuse will give
a delay of several seconds before connecting line electricity
to audio equipment.
The amount of this time delaycan be chosen between
5 seconds to 99 seconds.
4. Low Contact Resistance
Because it uses an Low Resistance Contact
Device, contact resistance from Active Fuse can be as low as 7 milliohms
5. Long Life
Conventional fuses will break when flowing currents
that exceed the amperage rating, and after that can not be used again.
Another case
with Active Fuse, which can
still be used after passing an electric current that exceeds the setting
value.
6. Zero Crossing Contact.
Before connecting PLN electricity to audio equipment,
Active Fuse will monitor whether the amplitude of PLN electricity is
at zero point,
if so then Active Fuse will connect line electricity
to audio equipment, this feature will prevent MCB in your home from going
down when
turning on audio equipment
Initially large power. You can read the detailed explanation
about Zero Crossing Contact at the
following link: http://www.sap.or.id/Zero_Crossing_Contact_Eng.html
The first three features mentioned above, namely Current
Rating, Response and Turn On Delay, can be changed according to need if
Active Fuse is used on different equipment.
Active Fuse is physically composed of two parts namely
the Active Fuse Unit and Active Fuse Communicator. Active Fuse Unit is
the part where there are LRCD, ampere meter, etc.
Active Fuse Communicator is the part that functions to set parameters
of the Active Fuse Unit.
I separated the Active Fuse Unit from the Communicator so
that the dimensions of the Active Fuse Unit could be reduced and the price
could also be cheaper.
Active Fuse Communicator only used if you want to change
the working parameters of the Active Fuse Unit. If you have more than
1 Active Fuse Unit, then you only have to buy 1 Active Fuse Communicator
unit that can be used for all Active Fuse Units you have.
If you don't need to change the parameters of the Active Fuse Unit,
then you don't need to buy Active Fuse Communicator, and I can do the
parameter settings as your request.
According to my personal listening test, Active Fuse
help the audio system to improve its quality in terms of
1. Bass sound become deeper and tight
2. Sound stage become wider and clearer
3. More precises sound depth
4. Sound from the system is more comfortable to hear and eliminate
ear fatigue (ear fatigue)
Before using Active Fuse then the existing conventional
fuse on the equipment must be replaced first with a jumper fuse. If this
change is not carried out then the positive impact of Active Fuse will
not be obtained, because electricity will still pass through conventional
fuse.
Each Active Fuse unit is supplied with 2 fuse jumpers which are
5x20 mm and 6x30 mm to replace the existing conventional fuse. Fuse Jumper
is made of pure copper rods that can flow up to 200A
Active Fuse has 2 output cables, one output is equipped with a
power plug, this output is to be connected to the power distributor,
and the other output is equipped with an IEC plug to connect to audio
equipment.
Cooper Based Jumper
Fuse
Following part are te explanation of each menu available at
Active Fuse Communicator including explanation
To move from one menu to next menu can be done by pressing Menu
button
* Fuse Rating Menu, this
menu used to determine require fuse current rating, it can be selected
from 0.5A up to maximum 10A,
resolution is 0.1A. Selection current
rating can be done by pressing (-) and (+) button to decrease or increase
desired rating value.
* Fuse Respon Menu, with this menu kind of
fuse respon can be selected. Selection of respon are SloBlo and Fast.
Selection can be dpne by pressing (-) and (+) button.
* Turn On Delay (TOD), Menu. This menu is
to determine require delay time after Active Fuse Unit turned on. Minimum
default delay is 5S and Maximum is 99S. Selection can be d0ne by pressing (-) and (+) button, to decrease or increase TOD
* After fuse specification already selected, all the data
can be saved into Active Fuse Unit, by the help of SAVE Menu
bellow
* To check wheter all the fuse data already saved or not,
Read menu bellow can be used
* Example read data can be seen on pic bellow. From left
to right Rating, Respon and Delay
After fuse spec setting done completely, all fuse spec can be written
manually on sticker. The vynil sticker also supplied together with
Active Fuse Unit.
Bellow pic is example.
