Soft Start PCB 1000W by moutoulos™

Description

;
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Official PayPal Conversion Rates
Add
Currency Converter
To Your Items
Soft Start 1000W
(moutoulos™)
The delay is intended to switch on the mains to heavy loads gradually to ensure that the
switch-on current
remains within certain limits and to prevent the fuses from blowing.
The elements that cause high currents
at switch-on are, for instance, the electrolytic
capacitors in the power supply of an output amplifier.
Since these are not charged at
switch-on, they constitute a virtual short-circuit on the supply lines. The
current can,
however, be kept within limits by inserting the present delay circuit between the mains
outlet
and the transformer primary. The amplifier is then powered in two stages:
in the
first instance, the current is limited by a number of heavy-duty series resistors a second
later these
resistors are shunted (short-circuited) by a relay contact.
In the diagram, R4–R7 are the heavy-duty series resistors, each with a value of 10 ohm
and rated at 5 W.
They limit the switch-on current to about 5.5 A. After relay close, the
230VAC PCB rail is ready for 2000w
continuous.
The relay is a type whose contact is rated at 2000 VA, which will be sufficient in most cases.
Its supply is
derived directly from the mains via potential divider R3-C1-B1-relay coil.
The resistor, R3 limits the current
at switch-on, after which C1 limits the current in
normal operation to about 20 mA. The delay time is
determined by electrolytic capacitors
C2 and C3 in parallel with the relay. The delay time may be altered by
suitably changing
the value of one or both of these capacitors.
For safety’s sake, the board also has provision for a mains fuse, F1. The rating of this
depends, of course, on
the current drawn by the load.
It should be noted that in the case of a double-mono stereo output amplifier
(with separate
power supplies) each of the mono amplifiers must be given a mains-on delay.
Note that C1 is a metallized paper type, wich is designed specially for mains voltage
applications and meets
stringent regulatory requirements.
Finally, at all times bear in mind that the circuit is connected to the mains,
so do not
touch anything inside the unit during operation and make sure that all wiring is safe
and secure.
*Regards*
® 2018 (c)
moutoulos ™
www.moutoulos.com
Amazing Boards PCBs
Check out my
other items
!!!
Read Before Buy-Bid:
I don't sell instruction for this project,
only
PCB.
From the day
order under normal circumstances, shipping takes approximately 10-14 business days.
This is one piece.
More pieces (quantities) it is possible, but contact me first.
Payment - Shipping - Policy
-----------------------------------
We accept payment through Paypal ONLY
.
We will ship to Worldwide.
If you do not have Paypal account, register in
https://www.paypal.com
. Payment must be received
within 2 days after auctions ended. Unpaid dispute will be filed to ebay for the non payable bidders.
Shipping Terms
All orders will be processed in 2 days from the date of payment or the date of e-Check is cleared. The delivery
confirmation will
be sent via e-mail when your orde
r is processed. Under normal circumstances, shipping takes
approximately 7-1
4 business days.
Shipping and handing fee covers mailing, packing, warehouse and distribution
costs, n
ot postage only. Shipping insurance is offered at 2.00 per item. Should you choose to decline shipping
insurance you accept full responsibility for all damages or losses
incurred in the shipping process.
Feedback and Det
ailed Seller Ratings
Dear buyers, if you are satisfied with our service, leave us a positive feedback. Our system will auto
matically do
the same for you. If you have any problems, don't leave negative or neutral feedback, contact us first to solve
the problem.
Contact Us
If you have questions, contact us, we are very glad to help you. Please allow us to reply your email within 24hrs.
Thanks For Looking !!!!.
Track Page Views With
Auctiva's FREE Counter