Thanks guys. The reason I asked is, it seems there is a lot of discussion in the thread about these devices being used as substitutes, yet I've scoured the docs and was unable to find a picture showing the correct orientation using this new board.
BTW, are there other dual JFETs available today to use as replacements for the Toshibas - without being very pricey NOS? I understand the duals are 'unobtanium'. I thought the board was specifically designed for these 3-pin devices, as well as, the 7-pin duals? Seems many other members are using them as well.
BTW, are there other dual JFETs available today to use as replacements for the Toshibas - without being very pricey NOS? I understand the duals are 'unobtanium'. I thought the board was specifically designed for these 3-pin devices, as well as, the 7-pin duals? Seems many other members are using them as well.
The 2SJ109BL/2SK389BL package will work better with the heatsink design (which also encapsulates the Zetex BJTs) as the package is flatter than the TO92 package of the singles. That said, I wouldn't worry about using singles. Also, the 2SJ74/2SK170 singles could be put in inline as according to John Curl, they work just fine backwards. Just compare the datasheet pinouts of the dual 109/389 to the 74/170s and you can see how to put them in if you want them the correct way.
Linear Systems does make duals, but not in a comparable or workable package, so if you use Linear Systems version, the singles are the only way to go. Their B variant matches up to the recommended Toshiba BL variant.
Linear Systems does make duals, but not in a comparable or workable package, so if you use Linear Systems version, the singles are the only way to go. Their B variant matches up to the recommended Toshiba BL variant.
I think most of it is on HCFR, but I don’t think anyone made a proper guide as you request. PCB assembly is not too hard, except for few components on the control board and the 2 preamps. As usual start with small parts and double check / test before powering up.
What I can try to do is to translate HCFR first page here as many useful info are there.
And don’t hesitate to ask any questions
That would be super helpful.
Thanks in advance
Try this one:
Universal Parcel Tracking - Global Package Tracking
Looks, as if it left Taiwan on july 28.... "Only" 24 days in transit
Consider yourself lucky. We in Denmark are oviously still banned, with no relay-resolution as of yet
It´s also registred at PostNord, so everything should be fine eventually
Universal Parcel Tracking - Global Package Tracking
Looks, as if it left Taiwan on july 28.... "Only" 24 days in transit
Consider yourself lucky. We in Denmark are oviously still banned, with no relay-resolution as of yet
It´s also registred at PostNord, so everything should be fine eventually
