Power Supplies & Chargers
Click here for general information about power supplies for the audio amplifier modules.

K4 - Basic Power Supply Module Price Photo
Batteries soon become an expensive way to power your electronic kit and electronic games. This is a basic power supply in a box using two 7805 regulators. Input up to 20V AC from a transformer or power pack. Two regulated outputs are available - one fixed at 5V, the other variable. Good introduction to three terminal regulators.

K60 - Regulated Power Supply Price
Kit accepts an unregulated AC or DC input. The user supplies a standard 3 pin voltage regulator from 5 volts (using a 7805) to 24 volts (7824). The full range of possible regulators is: 7805, 7806, 7808, 1810, 7812, 7815, 7818 & 7824. Large heat-sink provided. PCB = 64mm x 40mm (2 1/2" x 1 1/2")

K68 - Variable Power Supply Module Price Docs
This is a basic adjustable voltage power supply using the popular three pin regulator, LM317T. You can select any voltage between 1.5V and 30V using a potentiometer. The LM317T is rated at 1.5A so you must use a larger heat sink when drawing high currents.

K83 - Universal Power Supply Price Docs
Put in your own 78xx and 79xx 3-pin regulators (TO-220 type) to give fixed positive and negative voltage outputs. Supplied with 2 small heatsinks. Requires centre-tapped AC voltage source.
Dimensions = 78mm x 43mm

K124 - Positive Adjustable Power Supply module Price Photo Docs
A compact, easy to build and use, positive variable power supply module. It is ideal for powering any application requiring a DC supply at current levels up to 1.5 amperes. Can be combined with Kit 125 to create a dual-rail supply.

Features:

K125 - Negative Adjustable Power Supply module Price Docs
A compact, easy to build and use, negative variable power supply module. It is ideal for powering any application requiring a DC supply at current levels up to 1.5 amperes. Can be combined with Kit 124 to create a dual-rail supply.

Features:

K186 - Power Amplifier DC Supply Price Docs
This DC power supply board was designed for the K106 audio power amplifier kit but is also suitable for the K50 power amplifier kit as well. It is also suitable for any power amplifier module or circuit requiring a positive and negative rail voltage of up to 45 Volts per side. The output voltage and current will depend on the transformer chosen (not supplied with kit). Never use a transformer larger than 35V-0-35V as the capacitor's voltage rating will be exceeded.

K193 - 12V Sealed Lead Acid (SLA) Battery Charger Price Photo Photo Photo Docs
A 'smart' Sealed Lead Acid (SLA) 12V Battery Charger with Current Limiting. The charger uses a two step process for charging SLA batteries - a current limited 'fast' mode followed by a constant voltage 'float' mode. An onboard LED indicates when the charger is in 'fast' mode. When the LED goes out the battery is charged and the charger has switched to 'float' mode.

The charging current is user settable using two parallel resistors. Maximum charging current is 1A.


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