Abra AK-10 User Manual

Ac/dc power supply kit dc: 0 - 18 vdc, 1a ac: ac: 18 vac, 1a

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AK-10

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AC/DC Power Supply Kit

DC: 0 - 18 VDC, 1A

AC: AC: 18 VAC, 1A

• 18 Volts AC output and a Variable 18 volts DC output

• Up to 1 Amp in current output

• Simple component placement guide

• On -Off switch to save power when not in use

• Detailed theory on Power electronics

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Can. Toll Free: 1-800-361-5237

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Summary of Contents for Abra AK-10

Page 1 • 18 Volts AC output and a Variable 18 volts DC output • Up to 1 Amp in current output • Simple component placement guide AK-10 • On -Off switch to save power when not in use • Detailed theory on Power electronics www.abra-electronics.com...
Page 2: Table Of Contents
☐ Green Diffused LED (L) ☐ (2x) 2 pin Terminal Block (AC & DC) ☐ (6x) 1N4004 (D1 – D6) ☐ T0-220 heat sink Clip-on (HS-220C) ☐ ABRA Custom PCB Board ☐ Line Cord ☐ 36V step down transformer (TRF-170) ☐ LM317T...
Page 3: Specifications
Specs On-off feature Inter changable capacitors up is on, down is off Included heatsink! Mount with standoffs 18 volts adjustable DC 18 volts sine wave PC mount potentiometer with fine precsion adjustment Tools Required • Pencil type soldering iron • Solder 60 tin / 40 lead recommended •...
Page 4: Assembly Instructions
Assembly Instructions Please check off the parts list to ensure you have all the parts included in your kit. Solder low overhead components first, by placing them into the place marker where they belong. Insert Components and bend the pins slighty to hold into place when soldering Solder the pin with the soldering iron, for tips on how to solder please read the “soldering”...
Page 5: Schematic Diagram
Cut off the round connector end of the line cord and strip the wires ¼ inch. Tin both wires with solder. Slip on length of black heat shrink on each of the two stripped wires. Solder the two stripped line cord wires to the red wires of the transformer. Cover the bare wire joints with the heat shrink and heat them securely in place.
Page 6: Theory Of Operation
Thoery of Operation Ac Signal Your power plant step down transformers supplies to your home 220-240 volts RMS AC (Alternating Current), this signal is comprised of sine waves. A sine wave can be interpreted as a sway, it moves up and down like a wave in the ocean. Below is a graphical representation of a sine wave.
Page 7 Example (2) A good example of the usage of radians; There are two sine waves that have been measured, they Note: have the exact same identical properties ranging from amplitude to its period. The only difference is the second signal has a phase shift of 90°, the goal is to plot this new wave. If you are to proceed in working with degrees, a 90°...
Page 8 In North America the voltage RMS is 120v or 115v for common appliances to run on, however the peak voltage is 120v *√2 = 170 Peak Voltage. Therefore the furthest point form the middle is not 120v AC, it is 170v AC! RMS (root mean squared) is the terminology to best describe mathematically a constant alternating voltage that is being delivered.
Page 9: Transformers
Transformers Transformers in general are useful devices that assist in converting alternating current to either increasing or decreasing AC voltage. They achieve these results through the process of induction. A primary coil is feed with AC voltage, a non-conductive magnetic core or alternatively known as a ferrite core is the housing for the wires to coil onto.
Page 10 Dual output transformer (parallel connection) more current less voltage Dual output transformer (series connection)Less current more voltage Dual input transformer (parallel connection) Dual input transformer (series connection) Very versatile for 110v or 220v application, one transformer. Dual input and Output transformer (all the same configurations mentioned above in one package)
Page 11: Rectifiers
Rectifiers Rectifiers convert AC signal into DC signal, DC signals are required for electronics devices that need DC power to function. A power plant provides commercially three phase power, as in there are three independent sine waves in a line at any given time with the same; amplitude, RMS, oscillation rate of 60Hz and etcetera for north America.
Page 12: Capacitors
Capacitors For this power supply circuit the capacitor has two main roles and one side effect. The first role for the capacitor is to dampen the voltage and remove any ripple leftover. The second role for the capacitor is to act as a decoupling capacitor to remove noise from another circuit element by acting as a shunt and reducing the effects throughout the entire circuit.
Page 13: Troblueshooting/Faqs
Soldering When soldering ensure for maximum quality to use a soldering station with a variable temperature control, the recommend temperature setting is 260 to 280°C. Prior to soldering, wet the tip with solder 60% tin /40% lead and brush of the tip with a sponge. Do not dip the solder tip into the sponge or soak the sponge with water.
Page 14 For more details please read the “Capacitor subsection” in the theory chapter. The side holes allow you to mount the power supply with ABRA standoffs where ever you please; alternatively Where can I mount this? you may purchase a plastic project box to house your power supply.
Page 15: About Us
About Us Abra Electronics caters to industry, schools & hobbyists with a wide variety of components, kits and equipment. We have in stock imported products ranging from a multitude of companies to local products, all with affordable pricing. Feel Free to call us on our toll free numbers indicated below. You will be greeted with our knowledgeable and courteous staff members.