Conrad TPS-103 2W-6V Operating Instructions

The Conrad TPS-103 is a 2W-6V regulated power supply unit designed for stable DC voltage output. It features adjustable voltage output, short-circuit protection, thermal overload protection, and is suitable for powering small electronic devices, prototypes, and testing circuits. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operation Guidelines 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Adjustable voltage regulator, output terminals, power indicator LED, voltage adjustment knob, input power connector.

Feature	Description
Output Voltage Range	Adjustable from 0V to 6V DC
Maximum Output Power	2 Watts continuous
Output Terminals	Screw terminals for positive and negative connections
Power Indicator LED	Lights when unit is powered on
Voltage Adjustment Knob	For precise voltage setting
Input Power	AC adapter input (included)
Short-Circuit Protection	Automatic shutdown on overload
Thermal Protection	Prevents overheating damage
Regulation Type	Linear regulated output
Dimensions	Compact desktop design

Installation

Unpack and inspect contents. Place on stable, dry surface away from heat sources.

Connect AC adapter: Plug adapter into wall outlet, connect DC plug to unit's input jack.
Connect output: Use insulated wires to connect positive (+) and negative (-) terminals to your device.
Ensure polarity: Match positive to positive, negative to negative on your device.
Power on: Switch on AC adapter; LED should illuminate.

WARNING! Do not expose to moisture. Ensure proper ventilation around unit.

First-Time Setup

Power on unit; follow these steps for initial configuration.

Set voltage: Turn adjustment knob fully counterclockwise to minimum voltage before connecting load.
Connect device: Attach wires to your electronic device, observing correct polarity.
Adjust voltage: Slowly turn knob clockwise while monitoring with multimeter or device requirements.
Verify operation: Check that device operates correctly at set voltage.

CAUTION! Always set voltage to minimum before connecting sensitive electronics.

Specifications

Model: Conrad TPS-103
Output Voltage: 0-6V DC adjustable
Output Current: Up to 333mA at 6V (2W max)
Voltage Regulation: ±5% under full load
Ripple & Noise: Less than 10mV RMS
Input Power: 100-240V AC, 50/60Hz via included adapter
Operating Temperature: 0°C to 40°C
Storage Temperature: -10°C to 60°C
Protections: Short-circuit, thermal overload
Dimensions: 85mm x 65mm x 45mm
Weight: 180g (without adapter)

Controls and Settings

Front Panel: Power indicator LED, voltage adjustment knob, output terminals (+ and -).

Voltage Adjustment: Turn knob clockwise to increase voltage, counterclockwise to decrease. Use multimeter for precise measurement.

Indicator LED: Green LED indicates power is applied to unit. LED may dim or turn off during overload conditions.

Terminal Connections: Use 18-22 AWG wire for connections. Tighten screws securely but do not overtighten.

Connecting Devices

For safe connection to electronic devices:

Turn off power supply and device before making connections.
Connect red wire to positive (+) terminal, black wire to negative (-) terminal.
Connect opposite ends to device, observing polarity markings.
Set voltage to minimum before powering on.
Apply power and adjust voltage to required level.

Tip: Double-check polarity before applying power to prevent damage.

Operation Guidelines

Proper operation ensures longevity and safety:

Always start with minimum voltage setting when connecting new devices.
Do not exceed 2W total output power (Voltage × Current ≤ 2W).
Monitor device temperature during extended operation.
If overload protection activates, disconnect load and wait 5 minutes before restarting.
For variable voltage applications, adjust slowly while monitoring device response.
When not in use, turn off power and disconnect from wall outlet.

WARNING! Do not connect devices that require more than 333mA at 6V.

Safety Features

Short-Circuit Protection: Automatically limits current during short circuit conditions. Unit will resume operation when short is removed.

Thermal Overload Protection: Internal sensor shuts down output if temperature exceeds safe limits. Allow to cool before reuse.

Overload Protection: Current limiting prevents damage from excessive load demands.

Care & Cleaning

Unplug from power before cleaning. Use dry, lint-free cloth only; no liquids or chemical cleaners.

CAUTION! Do not immerse in liquids. Keep ventilation openings clear of dust and debris.

Regulatory Information

CE Compliant: Meets European safety standards. RoHS Compliant: Free of hazardous substances. FCC Part 15: Class B digital device; complies with interference limits. Copyright © Conrad Electronic SE. For support, visit www.conrad.com or contact local Conrad service center.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No output voltage	Power not connected/overload	Check AC adapter connection; ensure overload protection hasn't activated.
LED not lit	No power input	Verify wall outlet; check adapter connection; try different outlet.
Voltage unstable	Poor connections/overload	Tighten terminal screws; reduce load below maximum rating.
Unit gets hot	Excessive load/poor ventilation	Reduce load; ensure adequate airflow around unit.
Output cuts out	Short circuit/thermal protection	Check for short in wiring; allow unit to cool if overheated.

Reset: Disconnect power for 2 minutes to reset protection circuits.

Service: Contact Conrad technical support or authorized service center.