Pyramid Car Audio Power Supply PSV 200 User Guide

®
OWNER'S MANUAL  
Model:PSV-200  
20-AMP SWITCHING DC POWER SUPPLY  
 
FEATURES  
Your PYRAMID Heavy-Duty 20-Amp Switching DC Power Supply is designed to  
use AC power-to-power equipment that requires 12V DC automotive power.  
The power supply converts standard 120V AC household power to 13.8V DC  
power and can supply up to 20 amps of continuous power.  
Note: Your vehicle's electrical system provides 13.8 Volts when the  
engine is running.  
If you are an electronic hobbyist or technician, you will appreciate the many uses  
for the power supply at your workbench or in your house.  
For example, use your CB mobile transceiver as a bass station, check the  
operation of auto sound systems before you install them in your vehicle, or even  
power marine equipment such as pumps.  
Your power supply's features include:  
Regulated Output Voltage-Makes it safe to use with mobile CBs, Ham radios, CD  
players, tape players or anything you would power with a vehicle's DC electrical  
system.  
Cooling and Fan Control-a temperature controlled fan has been provided to  
improve cooling at high loads. The fan is controlled by a sensor mounted on the  
power transformer. The fan will be off at lower loads.  
It will come on only when the temperature of the power transformer is above 50 ºC  
due to higher loads. In case the fan fails or the air flow is blocked, a second  
temperature sensor mounted on the power transformer will activate over  
temperature shut down at 100 ºC. The output voltage will be automatically  
resumed once the unit cools down.  
Electronic Overload Protection-automatically shuts off standard 120V AC input  
power to the power supply when its output is overloaded.  
Overheat Protection Circuit-automatically shuts off if it overheats.  
Combo Output Connectors-act as both binding posts and banana plug terminals.  
Not recommended for outdoor use.  
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IMPORTANT SAFETY INSTRUCTIONS  
DANGER: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,  
CAREFULLY FOLLOW THESE INSTRUCTIONS.  
WARNING: This unit should not be directly connected to a battery for charging or  
for battery back-up. Battery charging and battery back-up may be undertaken  
only when the battery is connected through suitable external isolating diodes and  
charge limiting resistor. The isolating didode will ensure that battery does not  
back power the power supply. When a battery is deeply discharged, it will initially  
draw a very large charging current and force the power supply into current limit  
mode for prolonged periods. This is harmful for the power supply. The charge  
limiting resistor will limit the charging current to ensure the maximum charging  
current is well below the current limit value of the power supply.  
This manual contains important safety and operating instructions for this power  
supply. Before you use the power supply, read all the instructions and cautionary  
markings in this manual, on the power supply, and on the product that you will  
connect to the power supply, to reduce the risk of injury:  
• Do not use the power supply near water(for example, a bathtub, washbowl,  
kitchen sink, laundry tub, wet basement, or swimming pooi).  
• Do not place the power supply on an unstable cart, stand or table. If the power  
supply falls, it could injure a person or cause serious damage to the power  
supply.  
• Do not overload power outlets or extension cords. An overload can result in fire  
or electric shock.  
• Do not use an extension cord unless absolutely necessary. Using animproper  
extension cord could result in a risk of fire and electric shock. If an extension  
cord must be used, make sure:  
a. The pins on the extension cord's plug are of the same number, size, and  
shape as those of the plug on the charger.  
b. The extension cord is properly wired and in good electricai condition.  
c. The extension cord's wier size is at least 18 AWG.  
• Do not disassemble the charger; take it to a qualified service technician when  
service or repair is required. Improper reassembly may result in a risk of  
electric shock or fire.  
• Do not use an attachment not recommended, this could result in a risk of  
fire,electric shock, or injury to persons.  
• Never push any object into the slot in the power supply. It could touch  
dangerous voltage points or short out parts resulting in a fire or electrical shock.  
2
 
Caution: To reduce the risk of damage:  
• Do not expose the power supply to rain or excessive moisture.  
• Do not operate the power supply if it has been dropped or damaged in any way.  
Take it to a qualified service technician for repair.  
• Slots and openings on the back and bottom of the power supply's cabinet are  
for ventilation. To ensure the power supply's reliable operation and to protect it  
from overheating,be sure these openings are not blocked or covered.  
• The power supply should be operated only from a standard AC outlet that  
provides 120V AC/60 Hz, as indicated on the label. If you are not sure of the  
type of power supplied to your home, consult your local power company.  
• For added safety, the power supply's polarized plug fits only into a polarized  
outlet. If your AC outlet is not designed for the polarized plug, have an  
electrician install the correct outlet, or use an adapter to ground the power  
supply safeiy. Do not defeat the safety purpose of the plug.  
To protect the power supply during a lightning storm or when it is left  
unattended and unused for long periods of time, unplug it from the AC outlet.  
This will prevent damage to the power supply from lightning and power surges.  
• Do not operate the power supply with a damaged cord or plug- replace them  
immediately. To reduce the risk of damage to the electric plug an cord:  
a. Make sure the cord is not located where it will be stepped on, tripped over, or  
otherwise subjected to damage or stress.  
b. Disconnect the power supply by pulling the cord's plug rather than the cord.  
• Unplug the power supply from the outlet before attempting any maintenance or  
cleaning. Do not use liquid or aerosol cleaners. Use a damp cloth for cleaning  
and then wipe it dry immediately.  
• If your power supply dose not operate normally, in particular if any unusual  
sounds or smells come from it, unplug it immediately and contact a qualified  
service technician for repair.  
3
 
CONNECTIONS  
Caution : Make all other connections before you connect the power  
supply standard AC power.  
1. Turn off the device requiring power.  
2. Set the power supply's POWER switch to OFF.  
3. Turn the sleeves of the red and black binding output posts counterclockwise to  
expose the wire hole.  
4. Insert the device's positive wire (usually red) into the red binding post's wire  
hole, then tighten the binding post's sleeve to secure the wire in place.  
5. Insert the device's negative wire (usually black) into the black binding post's  
wire hole, then tightning the binding post's sleeve to secure the wire in place.  
6. If you are using the banana plugs connection, insert the plugs into the  
terminal's jack.  
Warnings: To avoid damage to both the power supply and the device:  
• Follow the correct polarity when connecting the power supply and the device.  
• Do not let the ends of the positive and negative wires touch each other.  
Note: The binding posts' wire holes can accommodate up to 16-  
gauge wire.  
7. Connect the power supply's AC cord to a standard 120V AC outlet.  
4
 
OPERATION  
To use the power supply after you connect the device to it, set POWER to turn it  
on with the red led light illuminated.  
If the power supply's POWER switch does not light, check all connections and  
confirm the wall AC outlet has power.  
If the outlet has power, set POWER to OFF, reduce the load (by using a device  
that does not require more that 20 amps), then set POWER to ON. Your power  
supply's overlaod protection circuit automatically shuts down the power supply  
when it is overlaod and resets by turning POWER to OFF.  
Caution: Place your power suppply in a well ventilated open and cool  
area. Do not block the openings at the fan suction on the  
sides and the discharge openings on the bottoms.  
Cauton: To reduce the risk of energy hazard, be careful not to short  
the output terminal during operation. Remove the output  
connections after use.  
Caution: Your power supply might cause TV or radio interference  
even when it is operating properly. To determine whether  
your power supply is causing the interference, turn off your  
power supply. If the interference goes away, your power  
supply is causing it.  
Try to liminate the interference by:  
• moving your power supply away from the receiver.  
• connecting your power supply to an outlet that is on a different electrical circuit  
from the receiver.  
• contacting a qualified service technician for help.  
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SPECIFICATIONS  
Input Voltage.......................................................................110 to 120V AC  
Input Frequency .................................................................................60 Hz  
Output Voltage.............................................................13.8V DC 0.5 Volts  
Output Current ....................................20 Amps DC Continuous (Maximum)  
Line Regulation ...................................................................Less Than 5%  
Load Regulation..................................................................Less Than 5%  
Overload Protection .........................................................FUSE 6.3A/250V  
Output Ripple .........................................................................150 mV RMS  
Design .................................................................................Switching Type  
Operating Temperature............................................32 to 86 ºF (0 to 30 ºC)  
Storage Temperature.........................................-13 to 158 ºF (-25 to 70 ºC)  
Input Cable ................................................SVT18 AWG / 3C 105 ºC 6 Feet  
Output Terminal ...........................................Binding Post 10 Amp/125 Volts  
Power Switch........................................................Illuminated, 5A /250 VAC  
Dimensions (WHD) ............................................................185x53x190 mm  
Weight...............................................................................3.7 lbs (1.68kgs)  
Specifications are typical; individual units might vary. Specifications are  
subject to change and improvement without notice.  
6
 

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