Can you also locate the product page that links to the datasheet and maybe a spice model at IXYS ?
Thx,
Patrick
Thx,
Patrick
Hi Patrick,
That page has datasheet links.
Here's the spice page, but I don't see any depletion parts.
P-Spice Model
That page has datasheet links.
Here's the spice page, but I don't see any depletion parts.
P-Spice Model
Could someone please check schematics? Or any suggestion then PCB´s not ordered yet.
It includes: 30W flyback, Patrick suggested regulator (#73) and Mr. Rothacher common source amplifier (#47).
I´ll test and report using Toroidy TTG-EL34SE using +12VDC wall cube COTS supply.
JP
It includes: 30W flyback, Patrick suggested regulator (#73) and Mr. Rothacher common source amplifier (#47).
I´ll test and report using Toroidy TTG-EL34SE using +12VDC wall cube COTS supply.
JP
Attachments
I only check the regulator. The rest is up to Michael.
The 56k resistor has 0.26W dissipation.
How hot do you intend to run the CMF55 ?
And how would you like to cater for different Idss of the LND150 ?
Patrick
The 56k resistor has 0.26W dissipation.
How hot do you intend to run the CMF55 ?
And how would you like to cater for different Idss of the LND150 ?
Patrick
I'm very sorry JPS64, but I never double-check PCB's other than my own. Besides it's super simple. 🙂
Patrick
Thank you for pointing.
Replacing 56k with serie CMF55(0.5W) 39k2@0.36W (3mA) + 64Y trimmer 100k (1mA(84k8@0.09W) to 2mA(45k8@0.19W)).
Mr. Rothacher
Could you please check simply your amplifier in my schematics (using jumper settings for first potentiometer to adjust 70mA and read resistor value then switch to desired resistor value).
I´ll do this modification tomorrow.
JP
Thank you for pointing.
Replacing 56k with serie CMF55(0.5W) 39k2@0.36W (3mA) + 64Y trimmer 100k (1mA(84k8@0.09W) to 2mA(45k8@0.19W)).
Mr. Rothacher
Could you please check simply your amplifier in my schematics (using jumper settings for first potentiometer to adjust 70mA and read resistor value then switch to desired resistor value).
I´ll do this modification tomorrow.
JP
Hi JPS64:
I have used these in several projects and they can’t be beat for low cost and availability from many sources. Between $4 to $15 depending on source and single vs dual rail. They grinded the markings off of the switcher IC on the bottom (SMT). There is also a single rail version but adjustable 45v to 400v and claimed 70w. I added a HV CRCRCRC with 2.2uF 450v film caps afterwards to clean it up some.
Amazon.com: Qianson High Voltage DC-DC Boost Converter 8V-32V to +-45V-390V Adjustable ZVS Capacitor Charging Power Supply Module: Home Audio & Theater
Single rail version:
DC DC 8~32V to 45~390V High Voltage Boost Converter ZVS Step up Booster Module-in Inverters & Converters from Home Improvement on Aliexpress.com | Alibaba Group
In matching / testing some more Loveltechs today, I'm finding most of them are pretty leaky. Problematic in the 1W circuit. Is that what others have observed with these? 🙂
Yes.
You should at least put a JFET follower upfront to drive it properly.
Unless of course your source is also low impedance.
Patrick
You should at least put a JFET follower upfront to drive it properly.
Unless of course your source is also low impedance.
Patrick
Attachments
Aw rats, I feared that might be the case. Much too tweaky for a FAOW. Thanks Patrick. 🙂
I spent hours selecting, and those only work when driven by a specific preamp. How Nelson got away with a 100k resistor in ZV8 is a mystery to me. Are some parts less leaky, or does the cascode help there?
Last edited: