Decade resistor box


Posted on Mar 29, 2013

This device was designed to use two generic-patterned, pre-made, pre-drilled circuit boards that are available from Radio Shack, and other places. Parts consist of: two generic pre-etched and pre-drilled PCBs (printed circuit boards), 136 precision 1%, 1/2-Watt metal-film resistors (46 values), seven 1P10T rotary switches, seven knobs, two binding posts, wire, solder, drilled cast-aluminum or plastic case (7.5`x4.3`x2.4`), panel markings, and rubber feet.


Decade resistor box
Click here to download the full size of the above Circuit.

Parts list: (1) Circuit Board, 5 holes connected x 47 rows x 2 columns (Radio Shack 276-170) (1) Circuit Board, 3 holes connected x 25 rows x 2 columns (Radio Shack 276-150) (7) 1P10T Rotary Switches (Mouser 10YQ110 or other) (7) Knobs (Jameco 136240, or other) (2) Binding Posts (Jameco 77690 or other) (1) Case, 7.5" x 4.3" x 2.4" aluminum or plastic (Jameco 11973 or 18905, or other) (1) Wire, #22 (1) Solder (4) Rubber Feet, Adhesive (Jameco 119618, or other) (136) Resistors, 46 different values, 1%, 1/2-Watt, metal film (www.radioshack.com @ $0.05 ea): (25) 10 ohm (3) 15 ohm (1) 24 ohm (7) 39 ohm (1) 91 ohm (1 ea) 100 ohm, 1K, 10K, 100K (4 ea) 20 ohm, 200, 2K, 20K, 200K (4 ea) 30 ohm, 300, 3K, 30K, 300K (1 ea) 27 ohm, 270, 2.7K, 27K, 270K (1 ea) 18 ohm, 180, 1.8K, 18K, 180K (2 ea) 43 ohm, 430, 4.3K, 43K, 430K (1 ea) 47 ohm, 470, 4.7K, 47K, 470K (1 ea) 62 ohm, 620, 6.2K, 62K, 620K (5) 1 Megohm (20) 2 Megohm For the panel markings, you can create them in a Paint-type program, and print them onto clear (or other) peel-and-stick labels.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Logarithmic amplifier
    Fluid-level-control
    Chug-chug
    Battery-Operated Black Light Circuit
    25 w stereo power amplifier circuit
    interfacing lcd
    Car Interior Lights Delay
    Video Amplifier
    Digital dice circuit
    TDA1514 audio amplifier circuit design electronic project
    Oscillators
    Voltage Controlled PWM Generator
    Motorola MaxTrac Radius and GM300 Series Introductory Information
    Circuit FM transmitter for MP3 and MP4 Player 2n2218 and 741 opamp
    100kHz-30MHz active antenna circuit diagram
    Interpretation of visual fatigue eliminator Circuit Design



    Top