Vacuum Tube / Valve vs. JFET Comparison. скачать в хорошем качестве

Vacuum Tube / Valve vs. JFET Comparison.

This is Part 1 where we compare a Semiconductor JFET circuit with a Vacuum Tube circuit. In Part 2 we will actually build a Vacuum Tube Audio Pre-amp. Some claim that Vacuum Tube amplifiers are better than Semiconductor Amplifiers, could this be true? In this video we compare the basic characteristics of a simple semiconductor and vacuum tube circuit to see if there might be a basis of truth to this. Lab Equipment used: ------------------------------------------------------------------------------------------------ Rigol Oscilloscope: https://www.amazon.com/gp/product/B08... Bench Power Supply (slightly different model) 30V @ 10A: https://www.amazon.com/gp/product/B08... UNI-T UTG932E UTG962E Function/Arbitrary Waveform Generator: https://www.aliexpress.us/item/225580... JAMECO Bread-board: https://www.amazon.com/dp/B00B8862FA Webcam Mokose: https://www.amazon.com/gp/product/B08... AverMedia 2 Plus: https://www.amazon.com/gp/product/B07... Papeaso Video Capture Cards, 4K HDMI to USB 3.0: https://www.amazon.com/gp/product/B09... "Nice-power" Dual power supply (needs modifications see:    • Dual Channel PSU Next Level Updates   and    • Dual Channel PSU Modifications  ): https://www.aliexpress.us/item/325680... Chapters: 0:00 Intro. 3:26 'Breadboard" circuit. 5:02 Test Power Supplies and Equipment. 7:24 2SK117 JFET data sheet. 9:37 6J1 Pentode Datasheet. 11:38 Connecting up the JFET circuit. 13:29 Testing the JFET cct Characteristics. 17:14 Connecting up the Tube circuit. 19:44 Testing the Tube circuit. 22:10 Conclusions.