relder said:Are said Lovoltech FETs sourceable by mere mortals as of yet?If so I would be willing.
I have 10,000 coming in (they say) and I'm sure we'll find a way
to free up some from the vast and ambitious POWER JFET plans
we have.
😎
NP, will you be coming out with a cool Jfet buffer version for the Zv4? Or better, how can I adapt a jfet for a buffer for the Zv4?
Blues said:
For this purpose, I would propose that you use an ordinary
signal JFET like a 2SK170 or 2SJ74 treated as a buffer, just
like the P channel Mosfet is used on ZV4. The difference will
primarily be the means of biasing it up, so that you'll have to
provide DC bias for the (now) AC coupled input.
The cute thing about the original P channel Mosfet is that you
could direct couple the input Gate on it and use the Vgs to
create the Drain to Source voltage for the device.
😎
No,
there's school, etc.
But hey, I finished a project that I started 3 years ago! A simple character LCD using a parallel port. The circuit was easy to build, I just needed a couple of parts...
Hopefully, I have a 4 days weekend coming. I might be able to add items to the parts list.
there's school, etc.
But hey, I finished a project that I started 3 years ago! A simple character LCD using a parallel port. The circuit was easy to build, I just needed a couple of parts...
Hopefully, I have a 4 days weekend coming. I might be able to add items to the parts list.
The input voltage has to be higher then the output voltage.
I think at least 3-4 Volts.
You have to check the minimum input voltage in the data sheet.
The diodes are there only for protection.
they should be rated at 50-100Volts and maybe 1A or so.
nothing fancy.
I think at least 3-4 Volts.
You have to check the minimum input voltage in the data sheet.
The diodes are there only for protection.
they should be rated at 50-100Volts and maybe 1A or so.
nothing fancy.
I guess I'll have to regulate everything to ±35vDC.
I did a price list just for the PSU scheme I posted and it's 10$ CAD. It's going to cost a lot of $$$. That's the PSU only for the I/V. There's also the USB to I2S converter, EIAJ to I2S, SPDIF to I2S, DAC, switch, etc. that all need a PSU and the circuit itself. I'm going to build 5 DACs. LOTS of $$$
Do you tell I could just not use the diodes? (Or use standard ones)
Is it important to select special electrolytics? I took some low impedance, high reliability 105°C ones. That's making a lot more $.
But at the same time, since I order more parts, there are some discounts that are not calculated in my spreadsheet that could make me save money too.
I did a price list just for the PSU scheme I posted and it's 10$ CAD. It's going to cost a lot of $$$. That's the PSU only for the I/V. There's also the USB to I2S converter, EIAJ to I2S, SPDIF to I2S, DAC, switch, etc. that all need a PSU and the circuit itself. I'm going to build 5 DACs. LOTS of $$$
Do you tell I could just not use the diodes? (Or use standard ones)
Is it important to select special electrolytics? I took some low impedance, high reliability 105°C ones. That's making a lot more $.
But at the same time, since I order more parts, there are some discounts that are not calculated in my spreadsheet that could make me save money too.
the SB360 are normaly OK but it would be safer if they were 100 V.
They are rated 60V which should be OK but schittky diodes are sensitive.
The SB3100 would be better.
The 1N5819 are also low voltage. Do you have these or are you going to buy them?
I would use something rated 1-3 A at 100 Volts.
They are rated 60V which should be OK but schittky diodes are sensitive.
The SB3100 would be better.
The 1N5819 are also low voltage. Do you have these or are you going to buy them?
I would use something rated 1-3 A at 100 Volts.
No, the only components I have are the PCM2706s and the TDA1541As.
Since they're used for protection, I don't think that Schottkys would be a real improvement.
Maybe the diodes will be simply the same as the rectifier if there's a discount after x units 😉
Arrrgh! I lost my USB drive with all the schematics, parts lists, PCB layouts, datasheets. Oh, and, just to make things worse, I don't have any backups. 
I didn't use it for over one week before losing it. I just wonder what happened to it. It wasn't in a safe place. Stolen?
I didn't use it for over one week before losing it. I just wonder what happened to it. It wasn't in a safe place. Stolen?
I found my USB stick two days ago. I feel much better now.
For the electrolytics are "high reliabilty", "low esr", etc. really useful or I can use standard 85°C ones?
For the electrolytics are "high reliabilty", "low esr", etc. really useful or I can use standard 85°C ones?
Cirrus CS4392
Hi to you guys! Is there anyone of you that has built a D1 for use it with a Cirrus CS4392? I've got a marantz cd5400 and I would like to upgrade pwr supply and output stage... Any info?
Thank you!!!
Hi to you guys! Is there anyone of you that has built a D1 for use it with a Cirrus CS4392? I've got a marantz cd5400 and I would like to upgrade pwr supply and output stage... Any info?
Thank you!!!
- Status
- Not open for further replies.