Rohm semiconductors and Midnite solar

[qrper]

Gang,

I found this interesting, especially since I've been known to let the magic smoke out of a power MOSFET from time to time.

Enjoy!

https://www.youtube.com/watch?v=XXxlpf8NWQM

Mike

[ClassicCrazy]

I never saw that before - video made a year ago too.

[Robin]

We have more lions of dollars of their FETs, so they wanted to show how we are using their parts at a components show. Nothing functional, but they are all working now.

[boB]

Yes. They had a B17 inverter module at the last APEC power electronics show at their booth.

[qrper]

Yes. They had a B17 inverter module at the last APEC power electronics show at their booth.

I remember reading somewhere that during their day in the sun, Heathkit purchased so many transistors that when to tried to buy Fairchild, the FTC stopped them.

Mike, wb8vge

[boB]

I remember reading somewhere that during their day in the sun, Heathkit purchased so many transistors that when to tried to buy Fairchild, the FTC stopped them.

Mike, wb8vge

WoW !  Very interesting !

Mike, speaking of QRP, I don't see ONE QRP rig in your mountain of kilowatts in QRZ pics !

BTW, what is this unit you call  kWp ?

Are you a CW or SSB or AM kind of guy, or all mode ?

boB

[qrper]

I remember reading somewhere that during their day in the sun, Heathkit purchased so many transistors that when to tried to buy Fairchild, the FTC stopped them.

Mike, wb8vge

WoW !  Very interesting !

Mike, speaking of QRP, I don't see ONE QRP rig in your mountain of kilowatts in QRZ pics !

BTW, what is this unit you call  kWp ?

Are you a CW or SSB or AM kind of guy, or all mode ?

boB

They're QRP and thus small and they hid when those photos were taken. I have a complete collection of Ten Tec Argonauts from the 315 receiver to the last, Argonaut 6. All the Yaesu QRP rigs, too. In my younger days, I did a lot of homebrew QRP stuff. I'm not a RF engineer and let the smoke out of many a 2N3866 trying to squeeze out another hundred milliwatts.
I do mostly CW, but I have to admit that after almost five decades in the steel mill, and numerous broken hands and fingers, I normally use a keyboard for CW now. I've been using FT8, or rather, my computer works FT8 and I sit back and watch. Once in a while, I'll get on 40SSB.

The KWp. That's kilowatts peak power. As you know, solar panels rarely meet published speciations, so a 10kW array won't produce 10Kw every day. So when the installer puts the panels up, he rates them as 10Kwp. Kinda of bragging rights, too. "I have a 10Kwp array" Of course 99.9% of the time the array will only produces 8kw. A few times a year on those super bright cold as hell winter days, I'll see the rated power from my array.

Mike, wb8vge

[boB]

I remember reading somewhere that during their day in the sun, Heathkit purchased so many transistors that when to tried to buy Fairchild, the FTC stopped them.

Mike, wb8vge

WoW !  Very interesting !

Mike, speaking of QRP, I don't see ONE QRP rig in your mountain of kilowatts in QRZ pics !

BTW, what is this unit you call  kWp ?

Are you a CW or SSB or AM kind of guy, or all mode ?

boB

They're QRP and thus small and they hid when those photos were taken. I have a complete collection of Ten Tec Argonauts from the 315 receiver to the last, Argonaut 6. All the Yaesu QRP rigs, too. In my younger days, I did a lot of homebrew QRP stuff. I'm not a RF engineer and let the smoke out of many a 2N3866 trying to squeeze out another hundred milliwatts.
I do mostly CW, but I have to admit that after almost five decades in the steel mill, and numerous broken hands and fingers, I normally use a keyboard for CW now. I've been using FT8, or rather, my computer works FT8 and I sit back and watch. Once in a while, I'll get on 40SSB.

The KWp. That's kilowatts peak power. As you know, solar panels rarely meet published speciations, so a 10kW array won't produce 10Kw every day. So when the installer puts the panels up, he rates them as 10Kwp. Kinda of bragging rights, too. "I have a 10Kwp array" Of course 99.9% of the time the array will only produces 8kw. A few times a year on those super bright cold as hell winter days, I'll see the rated power from my array.

Mike, wb8vge

BUT I see Drake and Heathkit (SB-101 ?) and Swan (?)  rigs there that aren't QRP. 

Do you rip the power amplifier sections out ?

[qrper]

I remember reading somewhere that during their day in the sun, Heathkit purchased so many transistors that when to tried to buy Fairchild, the FTC stopped them.

Mike, wb8vge

WoW !  Very interesting !

Mike, speaking of QRP, I don't see ONE QRP rig in your mountain of kilowatts in QRZ pics !

BTW, what is this unit you call  kWp ?

Are you a CW or SSB or AM kind of guy, or all mode ?

boB

They're QRP and thus small and they hid when those photos were taken. I have a complete collection of Ten Tec Argonauts from the 315 receiver to the last, Argonaut 6. All the Yaesu QRP rigs, too. In my younger days, I did a lot of homebrew QRP stuff. I'm not a RF engineer and let the smoke out of many a 2N3866 trying to squeeze out another hundred milliwatts.
I do mostly CW, but I have to admit that after almost five decades in the steel mill, and numerous broken hands and fingers, I normally use a keyboard for CW now. I've been using FT8, or rather, my computer works FT8 and I sit back and watch. Once in a while, I'll get on 40SSB.

The KWp. That's kilowatts peak power. As you know, solar panels rarely meet published speciations, so a 10kW array won't produce 10Kw every day. So when the installer puts the panels up, he rates them as 10Kwp. Kinda of bragging rights, too. "I have a 10Kwp array" Of course 99.9% of the time the array will only produces 8kw. A few times a year on those super bright cold as hell winter days, I'll see the rated power from my array.

Mike, wb8vge

BUT I see Drake and Heathkit (SB-101 ?) and Swan (?)  rigs there that aren't QRP. 

Do you rip the power amplifier sections out ?

Nah.... Plenty of Drakes and Heathkits, but no Swans.... and a couple of rows of Ten Tec Argonaut QRP rigs