آموزش الکترونیک کاربردی جلسه ی 9

The session covers a range of electronic topics: 00:00 starts the session, 00:29 introduces the session’s content, 02:58 discusses concepts before transistors, 05:45 covers FET and BJT transistor types, 07:18 focuses on BJT transistors, 08:07 explains the transistor’s function, 11:29 covers transistor switching, 17:11 discusses phototransistors, 20:52 explores transistor‑relay interactions, 23:55 covers Zener diodes, 28:50 compares photodiodes, phototransistors, and photoreceptors, 31:12 compares photodiodes and phototransistors, 31:55 explains the internal circuit of a phototransistor, 32:20 details phototransistors, 33:38 shows how to command a relay with a phototransistor, 37:58 introduces optocouplers, 38:39 gives an example of an optocoupler, 44:30 discusses transistor amplifiers, 49:21 covers common‑collector amplifiers, 50:19 covers common‑base amplifiers, 51:00 covers Darlington pairs, 52:11 covers MOSFET transistors, 54:04 discusses MOSFET operation, 57:15 covers logic gates, 58:13 covers logic circuits, 01:02:14 discusses the origin of logic ICs, and 01:05:09 covers types of logic IC gates.