Here are the details about ordering a Three Ring Circuits dual diode ring filter board or kit.
I am in Japan, so the price is in yen. I am asking 3,000 yen for a board, and 10,000 yen for a kit, plus shipping. I can accept payment by PayPal, so you should be able to pay in your local currency and have PayPal convert to yen for you. To make an order, please mail me with your name, shipping address, and paypal e-mail address. I’ll send a payment request to you. My e-mail address is my user name here followed by the at mark and gmail.com.
Buyer pays actual shipping. I’m using Japan Post’s “International E-Packet” system. It’s relatively speedy, and cheaper than EMS. Delivery should take 4 to 9 days, depending on the country. Everything is all packed up and ready to be sent, so I can send orders out the next business day. (Please note that Wednesday, Thursday, and Friday of this week are national holidays in Japan, so any early orders will ship on Monday.)
Rates are as follows:
580 yen to Asia 635 yen to North America, Europe, and Oceania 685 yen to South America and Africa
2 or 3 boards
630 yen to Asia 710 yen to North America, Europe, and Oceania 790 yen to South America and Africa
780 yen to Asia 935 yen to North America, Europe, and Oceania 1,105 yen to South America and Africa
1 kit plus 1 or 2 boards
880 yen to Asia 1,085 yen to North America, Europe, and Oceania 1,315 yen to South America and Africa
980 yen to Asia 1,235 yen to North America, Europe, and Oceania 1,525 yen to South America and Africa
In Japan, I can take payment by furikomi and chakubarai it to you. Or if you’re around Tokyo or Chiba, we can meet up for a beer and I’ll hand it to you in person:)
I think that would probably cover just about everybody. If not, mail me, and I’ll look up the rate.
In addition to having a tracking number, you can also choose to have an e-mail sent to you automatically at any or all of the following points in transit.
- Dispatch from Japan
- Arrived at foreign exchange office
- Wait for customs
- In customs
- Arrived at delivery office
Unless requested otherwise, I’m going to assume people want these e-mail notifications.
The kit includes one board and everything in the parts list section of the manual (page 10) with the following exceptions:
20 1N4148 diodes are needed, and they should be matched for best results. Matching diodes for twenty kits is more work than I can handle by myself,
and I buy the diodes in packs of 50, so I’m just including one pack of diodes. You’re responsible for matching them by yourself, and you’ll have some leftover at the end.
22 0.1uF ceramic capacitors are needed. I tried to include 25, just in case I miscounted. You should have a few leftover.
Two extra 100uF bipolar electrolytic capacitors are included for the low-frequency self-res mod on page 26 of the manual for those who want to try it. (There’s really no reason not to use these. There is clear difference in simulation, but I don’t hear any difference in practice. Anyway, they’re there if you want them, but I don’t think you’re missing much if you don’t.)
All of the ceramic capacitors should have 2.54mm lead spacing, but for eight of them, I can’t get that locally in any significant quantity. Those eight caps will have 5.08mm lead spacing. There’s just a little crook in the leads that can be straightened with a pair of pliers. It’s not hard, and it looks exactly the same once soldered in. Sorry, but please bare with the small inconvenience. All the other parts have the correct lead spacing.
All the variable resistors are positioned on the board to allow easy access from the side even when the unit is assembled. I can’t get variable resistors with the trimmer on the side, so the kits ship with VRs with trimmers on top. It also includes two sets of cables to allow access to the trimmers while the digital board and analog board are separate.
The quad op-amps are TL084, not 074. It’s not going to make any difference.
Please feel free to ask any questions.