and inductance. This kit is for a decade resistance box. It allows you to
quickly and accurately dial in a specific resistance value between 0 and
999,990
Ω
, in 10
Ω
increments..
In this hookup guide, we’ll first assemble the decade box, then explore its
application as a design aid and a test instrument.
Necessary Tools
• Soldering Iron
• Lead-based or Lead-free solder
• Diagonal or Flush cutters
Additional Tools and Supplies
• Red or black knobs are
highly recommended
- the rotary switches
are very hard to turn without knobs!
• A small set of pliers
• Small Philips Screwdriver
• A few inches of solid core hookup wire.
• Safety Glasses
• Magnifying glass or Loupe
• PCB Vise or Third Hand
• Volt Meter
Optional Materials
The decade box can be assembled to fit in an enclosure or behind a front
panel. In this tutorial, we’ll build it into a cast aluminum enclosure.
If you want to build yours into an enclosure, you’ll need the following.
• Aluminum enclosure
• Removable tape, such as painter’s or gaffer’s tape
• Center Punch and hammer
• A vise or clamps
• A drill press or hand drill
• A set of drill bits, or a step-drill
Suggested Reading
• How to Solder - Through-hole Soldering
• Resistors
• Connector Basics
• Switch Basics
• Voltage, Current, Resistance, and Ohm’s Law
• Electric Power
• Enclosure Modification
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