Need schematic for a 100 megawatt audio amplifier using vacuum tubes.

Need schematic for a 100 megawatt audio amplifier using vacuum tubes.

I have a switched mode power supply background and an looking at something like this for an old school audio amp...

I have a switched mode power supply background and an looking at something like this for an old school audio amp design. https://www.circuitstoday.com/push-pull-amplifier For SMPS pushpull we always used current mode control to assure the flux in the core does not walk all the way into saturation. Looking at these designs, none monitor or measure the current to assure the flux

Hello, I'm building Nuclear Quadrupole Resonance (NQR)to test for 14N. using the SpinCore Radio processor USB board. Here is the manual of the...

Hello, I'm building Nuclear Quadrupole Resonance (NQR)to test for 14N. using the SpinCore Radio processor USB board. Here is the manual of the board. http://www.spincore.com/CD/RadioProcessor/RadioProcessor_manual.pdf I could not find low-cost 50/100/200 Watts RF power amplifiers(0.25 - 10 MHz). I have just found the following RF power amplifiers: 1- ENI 325LA RF Power Amplifier, 250...

https://www.newport.com/p/70710. Is the input current noise lower than that of the LT1028 below 1 kHz? Regards, -- Jean-Pierre Coulon

https://www.newport.com/p/70710. Is the input current noise lower than that of the LT1028 below 1 kHz? Regards, -- Jean-Pierre Coulon

Hi, anyone interested in a EG&G 113P Pre-amp? I never used it much and just verified it works at 10X gain. Please message and let me know. ...

Hi, anyone interested in a EG&G 113P Pre-amp? I never used it much and just verified it works at 10X gain. Please message and let me know. Asking $325. http://i64.tinypic.com/2e21e1k.jpg Thanks, Scot

So, I had a chance to get back to that calibration gizmo for my biochip front end amplifier (1 nA at the shot noise limit in a 100-MHz BW). It...

So, I had a chance to get back to that calibration gizmo for my biochip front end amplifier (1 nA at the shot noise limit in a 100-MHz BW). It turns out that it's possible to do a very nice job, assuming that the integration cap (C1 in the schematic) has zero inductance, but as much as 0.05 nH blows it out of the water. (Should have thought of that, of course, but oh well.) Try running ...

https://www.mouser.com/ProductDetail/Texas-Instruments/ISO120SG?qs=rNOSrj6uCs17dA0jO5%2FyAw%3D%3 D -- Father Brown's figure remained...

https://www.mouser.com/ProductDetail/Texas-Instruments/ISO120SG?qs=rNOSrj6uCs17dA0jO5%2FyAw%3D%3 D -- Father Brown's figure remained quite dark and still; but in that instant he had lost his head. His head was always most valuable when he had lost it.

I still have a skeleton in the cupboard and the current lock down seems fine to bury it for good. Let there be an amplifier consisting of...

I still have a skeleton in the cupboard and the current lock down seems fine to bury it for good. Let there be an amplifier consisting of one or more CS input JFETs, an optional cascode, an op amp for plenty loop gain and feedback into the source. Everybody and his dog does this, but it has a drawback: it is not stable. If you measure into the input, you see a capacitance in series wit...

I'm looking into low-light detection using MPPC's and I am testing using the Hamamatsu C12332-01 evaluation module. I am looking for general...

I'm looking into low-light detection using MPPC's and I am testing using the Hamamatsu C12332-01 evaluation module. I am looking for general hints, tips and tricks to maximize the performance of these modules. We'd like to have a measure for the total amount of photons collected every 20-100ns (exact timing t.b.d.) One of the things that surprised me was that the frontend of the eval...

AoE 3 P. 485 (footnote 22) references a paper by Broderson, Chenette & Jaeger, entitled "A Superior Low Noise Amplifier", 1970 ISSC, P. 164....

AoE 3 P. 485 (footnote 22) references a paper by Broderson, Chenette & Jaeger, entitled "A Superior Low Noise Amplifier", 1970 ISSC, P. 164. Before I feed yet another $31 into the voracious maw of the IEEE, does anybody have a copy handy? Thanks Phil Hobbs

Something has occurred to me, and I was wondering if anyone knew more about this. Could a CMOS logic inverter, like a 4049, be used as a very...

Something has occurred to me, and I was wondering if anyone knew more about this. Could a CMOS logic inverter, like a 4049, be used as a very high gain amplifier if it were properly biased? I figured that the DC offset should be set at just about half the supply voltage, so that the gate was always between a '1' and a '0'. I am not sure if the gate would behave linearly in that region, or...

Can anyone recommend a PIN diode that can be used for up to switching a RF amplifier in and out of the transmission line at 150 MHz and 450...

Can anyone recommend a PIN diode that can be used for up to switching a RF amplifier in and out of the transmission line at 150 MHz and 450 MHz. The powewr level ia 50 watts RF.

So, JL's thread about level shifting a pHEMT switch brings up another issue: stabilizing the silly things. I have this little SKY65050 preamp...

So, JL's thread about level shifting a pHEMT switch brings up another issue: stabilizing the silly things. I have this little SKY65050 preamp that works very well--about a nanoamp of input current, 0.5 nV/sqrt(Hz) noise in the flatband, 0.8 pF Cin, flat from DC to about 120 MHz where the THS3091 second stage craps out. A very nice amplifier, but for the intended use, it could stand a bit ...

I have an audio amplifier circuit that uses an op amp I can't buy anymore because of the semiconductor shortage. It's not extremely special, but...

I have an audio amplifier circuit that uses an op amp I can't buy anymore because of the semiconductor shortage. It's not extremely special, but it drives highly capacitive loads (like a few hundred feet of cable) and will drive a 62.1 ohm load with 75 mA. I'd actually like a higher drive, but this was the best I could find in 2008 when I designed it and I've found nothing better

One of my useless things I think I'll throw together. An audio amp. I have transformers, audio output transformers from a tube amp that have a...

One of my useless things I think I'll throw together. An audio amp. I have transformers, audio output transformers from a tube amp that have a certain feature I need for this. This is a mobile audio amplifier. The basic configuration is shown at the end of this post in Spice. The coils, L1 and L2 are actually a center tapped winding. What I want to know is how much power dare

Does anybody here have experience with MAX4208/MAX4209? Current project is going to need an instrumentation amplifier, looking at my inventory...

Does anybody here have experience with MAX4208/MAX4209? Current project is going to need an instrumentation amplifier, looking at my inventory all I have is some through hole INA111 that still have Burr-Brown stamped on them (probably bought them in the mid 90s)...time to upgrade my stock! As I go see what's new I find the Maxim MAX4208 and MAX4209. Normally there seems to be a

I'm designing a power amplifier using some Exicon lateral MOSFETs as the final common-source stage. These will be used in various experimental...

I'm designing a power amplifier using some Exicon lateral MOSFETs as the final common-source stage. These will be used in various experimental systems. Each only needs to run around +/-50V out, up to 4A, and driving sinusoidally between 50 and 400kHz. The load can be approximated as a lossy series LC circuit, driven near resonance with R generally 10-20 ohms. There's an additional > 200

So I have a need for an analog isolation amplifier thing into a HV section at low audio frequencies. I remembered the "HV opamp" thing that...

So I have a need for an analog isolation amplifier thing into a HV section at low audio frequencies. I remembered the "HV opamp" thing that John Larkin posted a while back and that seems to work well, but I'd like to isolate the feedback via pwming it and sending it back across the barrier via an optocoupler and integrating. I dont really want to chop it first and have more LV elec...

It's winter, and the amplifier in my PC speakers just died. I think it'd be kinda cool to have a toob speaker amp, but I'm too lazy (and...

It's winter, and the amplifier in my PC speakers just died. I think it'd be kinda cool to have a toob speaker amp, but I'm too lazy (and time-challenged) to build one up from scratch. Are there, by any chance, kits out there? I'm not looking for nickel- cored transformers with solid silver windings, genuine paper caps rolled on the thighs of virgins, toobs dipped in LN2, and all that c...

I got my hands on a small lot of Acrian TT5021 RF power transistors. They are bipolar RF transistors in 7mm diameter white ceramic pucks...

I got my hands on a small lot of Acrian TT5021 RF power transistors. They are bipolar RF transistors in 7mm diameter white ceramic pucks (probably BeO) with four wings and a stud. They are probably roughly 30W VHF amplifier transistors. Does anyone have a datasheet for these things? Google came up dry. Thanks, Jeroen Belleman