Electronics transistor how to video series page 1

Electronics transistor how to video series below covers the basics of using transistors. It helps me a lot if videos are watched directly on YouTube (links provided), donations are given (patron link below), and if Americans use the product links before making qualified purchases.

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Electronic controlled switch

It is really easy to get a bipolar junction transistor to work as an electrical on/off switch (covered in videos below). A load is connected between the collector and the proper side of the power supply. Positive side of the power supply for a NPN BJT, and negative side for a PNP BJT. The emitter is connected directly to the other side of the power supply (negative for NPN BJT and positive for PNP transistor).

Applying a small amount of current from base to emitter will allow a multiple (probably by more than 100 times) amount of current from collector to emitter. The base voltage needs to be more positive than the emitter for a NPN BJT, and more negative negative by about 0.6V for the PNP BJT for current to flow. Make sure to limit current through the base to emitter to just enough to guarantee transistor saturation (fully on).

Video below: Transistor circuit 1 NPN BJT 2N2222 switch for beginner DIY electronics hobbyists Click here to watch directly on YouTube!

Schematic to Breadboard Electronics NPN Bipolar Junction Transistor BJT Switch by Electronzap on Twitter aka Electronzapdotcom on YouTube
Schematic to Breadboard Electronics NPN Bipolar Junction Transistor BJT Switch by Electronzap on Twitter aka Electronzapdotcom on YouTube

Video below: Transistor circuit 2 PNP BJT 2N3906 switch for beginner DIY electronics hobbyists Click here to watch directly on YouTube!

 

PNP Bipolar Junction Transistor BJT switch circuit video diagram
PNP Bipolar Junction Transistor BJT switch circuit video diagram

Video below: Transistor circuit 3 2N3904 NPN BJT wired as NOT Gate signal inverter explained Click here to watch directly on YouTube.

NPN Transistor NOT Gate as a signal inverter circuit video diagram
NPN Transistor NOT Gate as a signal inverter circuit video diagram

Video Below: Transistor circuit 4 two NPN BJTs 2N2222 pulse generator circuit beginner DIY electronics hobbyists Click here to watch directly on YouTube!

NPN Bipolar Junction Transistor BJT Pulse Generator Circuit Diagram.
NPN Bipolar Junction Transistor BJT Pulse Generator Circuit Diagram.

Video below: Transistor circuit 5 Trimpot voltage divider controlled NPN 2N3904 PNP BJT 2N3906 DIY electronics Click here to watch directly on YouTube!

Trimpot voltage divider controlled NPN and PNP bipolar junction transistors demonstration circuit
Trimpot voltage divider controlled NPN and PNP bipolar junction transistors demonstration circuit

Video below: Transistor circuit 6 2N2222 NPN Bipolar Junction Transistor BJT Constant Current Source Watch directly on YouTube!

NPN Bipolar Junction Transistor BJT Current Source Demonstration Circuit Diagram
NPN Bipolar Junction Transistor BJT Current Source Demonstration Circuit Diagram

Video below: Transistor circuit 7 AND gate switches 2N2222 NPN BJT and SN74HC08N quad 2 input pos AND gates Click here to watch directly on YouTube!

Diagram covering the basics of making an electronics AND gate with mechanical switches or NPN Bipolar Junction Transistors BJTs or by using a SN74HC08N Quadruple 2 Input Positive AND Gates
Diagram covering the basics of making an electronics AND gate with mechanical switches or NPN Bipolar Junction Transistors BJTs or by using a SN74HC08N Quadruple 2 Input Positive AND Gates

Video below: Transistor circuit 8 NAND gate switches 2N2222 NPN BJT and SN74HC00N quad 2 input NAND gate IC

Diagram showing NAND gate circuits made with switches or 2N2222 NPN Bipolar Junction Transistors BJTs or SN74HC00N integrated circuit
Diagram showing NAND gate circuits made with switches or 2N2222 NPN Bipolar Junction Transistors BJTs or SN74HC00N integrated circuit

Video below: Transistor circuit 9 Schmitt Trigger 2N2222 NPN Bipolar Junction Transistors BJTs trimpot Click here to watch directly on YouTube!

NPN Bipolar Junction Transistor BJT Schmitt Trigger Demonstration Circuit diagram for electronzap electronzapdotcom video
NPN Bipolar Junction Transistor BJT Schmitt Trigger Demonstration Circuit diagram for electronzap electronzapdotcom video

Video below: Transistor circuit 10 2N3906 PNP Bipolar Junction Transistors BJTs based current mirror Click here to watch directly on YouTube!

PNP Bipolar Junction Transistors BJTs Current Mirror Demonstration Circuit Diagram
PNP Bipolar Junction Transistors BJTs Current Mirror Demonstration Circuit Diagram

Video Below: Single 2N2222 NPN Bipolar Junction Transistor BJT LED flasher circuit step by step build Click here to watch directly on YouTube!


Video below: Transistor circuit 11 2N2222 MJE182 NPN emitter follower common collector supercapacitor charger. Click here to watch directly on YouTube!

2N2222 and MJE182 with heat sink NPN Bipolar Junction Transistor BJT common collector aka emitter follower circuit used to control output voltage diagram
2N2222 and MJE182 with heat sink NPN Bipolar Junction Transistor BJT common collector aka emitter follower circuit used to control output voltage diagram

Video below: Transistor circuit 12 2N3904 NPN BJT emitter follower cascaded with 2N3906 PNP BJT to cancel offset Click here to watch directly n YouTube!

Emitter Follower AKA Common Collector NPN Bipolar Junction Transistor BJT circuit plus PNP Offset Canceling Diagram
Emitter Follower AKA Common Collector NPN Bipolar Junction Transistor BJT circuit plus PNP Offset Canceling Diagram

Video below: Transistor circuit 13 2N2222 NPN Bipolar Junction Transistor BJT Astable multivibrator Click here to watch directly on YouTube!

2N2222 NPN Bipolar Junction Transistor BJT Astable Multivibrator circuit with flashing LEDs circuit diagram by electronzapdotcom
2N2222 NPN Bipolar Junction Transistor BJT Astable Multivibrator circuit with flashing LEDs circuit diagram by electronzapdotcom

Video below: Transistor circuit 14 Two 2N2222 NPN BJTs alternate DC supply voltage direction across a load Click here to watch directly on YouTube!

Electronics NPN Bidirectional Power Source Voltage Prototype Circuit diagram by Electronzap Electronzapdotcom
Electronics NPN Bidirectional Power Source Voltage Prototype Circuit diagram by Electronzap Electronzapdotcom

Video below: Transistor circuit 15 Fading off an LED using 2N2222 NPN Bipolar Junction Transistor and capacitor Click here to watch directly on YouTube!

Fading off LED using 2N2222 NPN Bipolar Junction Transistor with capacitor and push button switch diagram by electronzap electronzapdotcom
Fading off LED using 2N2222 NPN Bipolar Junction Transistor with capacitor and push button switch diagram by electronzap electronzapdotcom

Electronics transistor how to video series page 2


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