Thoughts/Design

[HokieGeek]

Will use a switch to select between the two dials

Capacitance values

Dial 1	Dial 2
0	0
10pF	47pF
22pF	470pF
100pF	680pF
220pF	3.3nF
1nF	4.7nF
10nF	6.8nF
100nF	47nF
1µF	68nF
10µF	470nF
100µF	680nF
1000µF	4.7µF

2% tolerance

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?State=EDIT&ProjectGUID=4b10dd36-2987-42b1-a5f7-c3f0c798d72c

5% tolerance

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?State=EDIT&ProjectGUID=6efe58b9-b818-4140-98a8-e2cdefc0ae5e

[HokieGeek]

http://www.instructables.com/id/Build-a-ResistorCapacitor-Selection-Box/

[HokieGeek]

http://www.rfcafe.com/references/electrical/capacitor-values.htm

1.2 12 120 1200
1.3 13 130 1300
1.5 15 150 1500 0.015 0.15 1.5 15 150 1500
1.6 16 160 1600
1.8 18 180 1800
2.0 20 200 2000
2.2 22 220 2200 0.022 0.22 2.2 22 220 2200
2.4 24 240 2400
2.7 27 270 2700
3.0 30 300 3000
3.3 33 330 3300 0.033 0.33 3.3 33 330 3300
3.6 36 360 3600
3.9 39 390 3900
4.3 43 430 4300
4.7 47 470 4700 0.047 0.47 4.7 47 470 4700
5.1 51 510 5100
5.6 56 560 5600
6.2 62 620 6200
6.8 68 680 6800 0.068 0.68 6.8 68 680 6800
7.5 75 750 7500
8.2 82 820 8200
9.1 91 910 9100

[HokieGeek]

http://www.allaboutcircuits.com/textbook/direct-current/chpt-13/series-and-parallel-capacitors/

[HokieGeek]

2% tolerance search

http://www.mouser.com/Passive-Components/Capacitors/_/N-5g7rZscv7?P=1z0z819Z1z0z7l5Z1z0wpn9&Ns=Pricing%7c0

5% tolerance search

http://www.mouser.com/Passive-Components/Capacitors/_/N-5g7rZscv7?P=1z0z819Z1z0z7l5Z1z0x6fr&Ns=Pricing%7c0