ghurd - Hurd Solar Renewable Energy

Extra IRFZ44N power N-fets

$1 each

Power FET FDP7045L

$2 each

Ultralow resistance, 0.004 ohms, for 12 Volt systems only

Small Clip-On Aluminum Heat Sinks

2 for $1

Enough for the included power N-fets if the load of each is 6 amps or less. Each has a dab of heat sink compound for your convenience, plus, it will save you from having to buy a tube

Schottky Diodes - 1A 40V
Schottky Diodes - 3A 60V

8 for $1
4 for $1.50

Useful for flyback, solar, or building bridge rectifiers

Schottky Diodes
10A 45V, 0.57Vforward, TO-220 size
STPS1045D

$1 each, or 6 for $5

They each require a separate heat sink. The cathode is connected to the tab. Data sheet: http://www.st.com/stonline/books/pdf/docs/3501.pdf

Schottky Diodes
15A 25V, 0.35Vforward, ‘Low Drop Power Schottky’, TO-220 size STPS15L25D

$2 each, or 6 for $10

They each require a separate heat sink. The cathode is connected to the tab. Data sheet: http://www.datasheetarchive.com/pdf/3256945.pdf

Basic and Simple Variable Voltage Supply Kit

$3 each

Simplifies calibration and bench testing of the Controller Kits

A collection of past their prime, though reasonably decent parts which I got/obtained cheap: A strange numbered 7809 voltage regulator rated for 1.5A in TO-220, two 1k trimmers, a few resistors, and a small piece of “perf board”. Not bad for the price! More details and a photo to come.

Copper Battery Cable Lugs or Terminals
2 sizes: 5/16” or 3/8”

6 pieces for $5

Hard to find, and generally quite expensive! These are for #8 wire; may require extra shipping charges.

Golf cart batteries use 5/16” on both terminals. Marine batteries use one of each. Batteries will vary. I have used these with wire as small as #14. Strip twice as much wire, twist the exposed wire, fold in half, twist another half turn, insert, crimp with pliers near the opening, solder.
Crimping too near the ring end can cause the solder to leak.
I have used these with #6 wire, sometimes it fits, sometimes by snipping a couple stands of the stripped wire.

Dump Load Power Resistors
( USA ONLY)

8 pieces for $12

Manufactured by CTG – Ward Leonard / Ohmite

Wire wound
10 ohm,
25 watt
5% tolerance
low inductance
0.25” terminals
2” x 9/16”
ceramic tubes
Mounting hardware not included

Each resistor will dump about 1.4 amps at 12V. 4 resistors on each power N-fet will dump about 5.6A, and the power N-fet will only need a small heat sink.

Includes 2 Schottky diodes (1A 20V or similar) for use as flyback diodes. One for each power N-fet.

USA ONLY. I can ship to other countries, but it may not be worth it due to additional shipping costs.

Bridge Rectifier

$4 for the first one, $3 for each additional

35 Amp 200 Volt
Metal case, Fast-On terminals

Heat Sink Compound

$1

Tiny packet, enough for 3 bridge rectifiers