Hi Density Groundplane Perfboard
2 layer board of 4.09 x 4.09 inches (103.9 x 103.9 mm)
Uploaded:
April 1st 2017
Shared:
April 1st 2017
Total Price:
$83.70
Ordinary perfboard suffers from a couple of problems… First, it has no groundplane, so there's nothing to prevent excessive radiated noise. Also, today's parts tend to have much higher density leads, meaning the holes must be drilled closer together. The added groundplane and plated through via…
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Ordinary perfboard suffers from a couple of problems… First, it has no groundplane, so there's nothing to prevent excessive radiated noise. Also, today's parts tend to have much higher density leads, meaning the holes must be drilled closer together. The added groundplane and plated through via…
Show full description
Divide by 1.5 v1.0
2 layer board of 1.05 x 0.75 inches (26.7 x 19.0 mm)
Uploaded:
March 13th 2017
Shared:
March 13th 2017
Total Price:
$3.90
This design is untested, but the theory is sound.
15 MHz goes in, 10 MHz comes out.
- IC1 - 74LS74D
- IC2 - 74LVC2G86
- IC3 - 74LVC2G04
- IC4 - 74LVC1G17
- R1 - 1 MΩ
- R2 - 1 kΩ
- R3 & R4 - 50 Ω
- C1 - C4 - 0.1µF
- C5 - 10 pF
- C6 & C7 - 220 pF
- C8 - 22 pF
- L1 - 1.2 µH
This design is untested, but the theory is sound.
15 MHz goes in, 10 MHz comes out.
- IC1 - 74LS74D
- IC2 - 74LVC2G86
- IC3 - 74LVC2G04
- IC4 - 74LVC1G17
- R1 - 1 MΩ
- R2 - 1 kΩ
- R3 & R4 - 50 Ω
- C1 - C4 - 0.1µF
- C5 - 10 pF
- C6 & C7 - 220 pF
- C8 - 22 pF
- L1 - 1.2 µH
Divide by 3 v2.0
2 layer board of 0.90 x 0.75 inches (22.9 x 19.0 mm)
Uploaded:
March 12th 2017
Shared:
March 12th 2017
Total Price:
$3.35
Adds a self-biased inverter on the input and PI network LPF on the output. The input can be sine or square and the output will be ~13 dBm sine.
- IC1 - 74LS74D Dual D flip-flop
- IC2 - 74AHC1G86DBV Single 2-input XOR
- IC3 - 74LVC2G04 Single inverter
- C1-C3 - 0.1µF
- C4 - 10 pF
- R1 - 1 …
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Adds a self-biased inverter on the input and PI network LPF on the output. The input can be sine or square and the output will be ~13 dBm sine.
- IC1 - 74LS74D Dual D flip-flop
- IC2 - 74AHC1G86DBV Single 2-input XOR
- IC3 - 74LVC2G04 Single inverter
- C1-C3 - 0.1µF
- C4 - 10 pF
- R1 - 1 …
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mini-DIN 6 breakout
2 layer board of 0.90 x 0.60 inches (22.9 x 15.3 mm)
Uploaded:
January 6th 2017
Shared:
January 6th 2017
Total Price:
$2.70
Accepts a CUI MD-40S or MD-60S. For the 40S, use pins 3-6 (corresponds to pins 1-4).
Accepts a CUI MD-40S or MD-60S. For the 40S, use pins 3-6 (corresponds to pins 1-4).
Divide-by-3 v2
2 layer board of 0.80 x 0.75 inches (20.3 x 19.0 mm)
Uploaded:
June 16th 2016
Shared:
July 7th 2016
Total Price:
$3.00
2 D + 1 XOR variant. Circuit courtesy of Charles Steinmetz via the Time Nuts mailing list.
2 D + 1 XOR variant. Circuit courtesy of Charles Steinmetz via the Time Nuts mailing list.
