Permanent Magnet DC Generators

461400 Voltage Regulator

The 461400 solid state voltage regulator is designed for charging 12 V batteries. It will accept input voltages of up to 50 volts dc and will regulate the output voltage so as not to exceed about 14 volts. The electronic circuit board is enclosed in a weather resistant die cast aluminum housing.

The type of voltage regulation circuit is a zener-regulated series Darlington transistor, in which excess power is dissipated as heat.

In typical operation, once the battery is fully charged, the regulator serves to limit the maximum applied voltage. In this mode of operation even a high voltage drop at low current produces very little heat.

Our 461400 12V Voltage Regulator can be used with most of our permanent magnet DC generators as long as the input and output voltage adhere to the operating envelope of the Voltage Regulator (see specifications below).

If you are using a Bike Power Generator, you would need to use the Flexcharge Charge Controller see www.flexcharge.com and the NC25A/12. The input current from the Bike Power Generator exceeds what the 461400 Voltage Regulator can absorb.

Specifications:

• Input voltage – 50 volts dc maximum
• Output voltage – 13.8 volts nominal at no load
• Output current – 8 amperes dc maximum
• Int. voltage drop – load sensitive, 0.5-3 volts

Dimensions:

• 152 mm long, 90mm wide, 48 mm high - 380 g
• (5.35” long, 2.68” wide and 1.89” high - 13.5 oz)

Mounting:

The 461400 voltage regulator can be mounted in any position, provided that the base of the regulator, which dissipates heat, is in contact with a heat sink (a heat absorbing surface, such as a metal plate or cabinet - or ideally an aluminum heat sink) Silicon or other thermal compound should be used to improve thermal conductivity between the regulator and the surface to which it is mounted.

The regulator is mounted using four M4 screws (# 8) spaced at the corners.

Electrical Connections

The input and output wires are connected to the two barrier strips in the top of the regulator case, according to the polarity markings indicated on the case. The wires should preferably be terminated in crimp- on spade terminals, but if such terminals are not available, the wires, if stranded, should be twisted and tinned with solder, so that no wire strands can contact each other.

The regulator case is not electrically connected and does not require grounding, but may be grounded if desired.

Cautions

Heat dissipation the regulator must be mounted in a heat sink with adequate thermal conductivity if it is to be operated near its maximum ratings, or if there is a high voltage drop between input and output.

Reverse Polarity – the correct polarity (positive to positive, negative to negative) must be observed or permanent damage to the circuit will result.

Short circuits

If the output is short circuited, and the output current exceeds the maximum specifications (10 amperes) for more that a few seconds, permanent damage to the circuit will result.

Voltage Regulator 12v (461400): $125.00

Voltage Regulator 24v (461401): $125.00

Custom-machined Mounted Aluminum Heat Sink (461402): $23.00