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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Yes, I see the effect like you. The bulbs blinking pretty constantly while the speed of the propeller was serious varied. Seem be the bulbs are lit by a hidden wireless generator.
Hmm, seem be the light bulbs had powered by room's THERMAL®®® energy. Then the bulb generated electricity. Then it cause the fan rotated. The man put his hand above the fan just for cooling because the room so HOT®®® (so "THERMALLY")!!! :D :D :D
I have a question: The orange RCA jack with "COAX" labelled is digital audio output? Is it an I2S ouput? (It is on the back of my DVD/MPEG4 player).
**broken link removed**
In my local, buy original Tesla (now JJ) and precision Russian military valves are much much more easier than buy old Motorola 2N3055H or Signetics NE5532. But valves are more expensive, require many clumsy things. And I don't like valve as solid state.
Thank for info. I am interested in solid state amp more than valve amp. I only like using valve amp as guitar amp, where than valve distortion is more interesting.
I will buy Russian valve like 6N1P-EV, 6N2P-EV and GU-50 to build 50W valve amp. GU-71 will be use if more power are considered...
I was surprised by it performance against traditional Butterworth filter like flat sum response, require only one type (value) of capacitors (because I choose LR2 version).
But the phase of low-pass output are inverse 180° with the high-pass one. So in the layout above, I used half of NE5532 as...
What I am going for is Linkwitz-Riley crossover. They give advantage: flat sum response, and allow me to use single capacitor instead of double, since 0.2uF are not available.
But I forgot that Linkwitz-Riley are use with gain=1, while my mistake schematic use with gain=2 :banghead:.
What is it purpose?
They will be connected by wire. Put them in the board cause me don't know how to arrange parts well. The wires will be as short as posible, of course.
I have omitted them in the schematic because it is too hard (for me) to draw clearly.
Because they are on the board, not...
Here is my crossover: (Now I have more than enough opamp to use because my bro have a lot.) All power supply wires are omitted in the shematic to reduce clumsy :D
And here are PCB layout for preamp and crossove sections, I decide to make seperated boards because they have different widths:
(1)...
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