• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Need circuit help? Post them in the comments! I've answered over 50,000!

Blog | Categories | About | Hire Me | Contact | Calculators-online
You are here: Home / Archives for Transistor

Transistor

2N3906 Datasheet [40V, 200 mA, PNP Transistor]

Last Updated on May 18, 2026 by Swagatam Leave a Comment

2N3906 pinout details

In this post I have explained the complete datasheet of the transistor 2N3906. It is the complementary to the transistor 2N3904. Here is the complete datasheet for the 2N3906 PNP transistor. Pinout Configuration The transistor 2N3906 has 3 pinouts named as emitter, base and collector. These pinouts are arranged as shown in the following figure: […]

Filed Under: Datasheets and Components Tagged With: 200, 2N3906, 40V, Datasheet, PNP, Transistor

BC547 Transistor Datasheet [45V, 100mA NPN Transistor]

Last Updated on May 18, 2026 by Swagatam Leave a Comment

BC547 symbol and pinout

BC547 is a 100 V, 200 mA, NPN transistors, which is a general purpose small signal transistor. The following paragraphs discuses the datasheet of BC547 transistor for a quick reference. Pinout Configuration The following diagrams shows the pinout configuration and the symbol of the transistor BC547: Absolute Maximum Ratings: Electrical Characteristics: Equivalents 2N2222: Another typical […]

Filed Under: Datasheets and Components Tagged With: 100mA, 45V, BC547, Datasheet, NPN, Transistor

Semiconductor Tester Circuit [LED, Transistor, SCR Tester]

Last Updated on June 8, 2026 by Swagatam 2 Comments

LED diode transistor SCR tester circuit

The semiconductor tester circuit I have explained below performs continuity tests on SCRs, bipolar transistors, and diodes. How the Circuit Works A squarewave oscillator with a frequency of about 350 Hz is produced by a couple of IC 4049 gates, U1a along with U1b, R1, R2, and C1. The complementary outputs required for testing both NPN and […]

Filed Under: Meters and Testers Tagged With: LED, SCR, Semiconductor, Tester, Transistor

Transistor Monostable Circuits with Applications

Last Updated on June 23, 2026 by Swagatam 25 Comments

transistor monostable with LED

In this post I have explained how to build a few simple monostable circuits using only transistors, and also learn how to make practical application circuits with them. If you search for transistor monostable circuit online, you will find that one typical circuit has been discussed in all the online articles. This circuit looks a […]

Filed Under: Mini Projects Tagged With: Applications, Circuits, Monostable, Transistor

Transistor Multivibrator Circuits [Astable, Bistable, Monostable]

Last Updated on September 22, 2026 by Swagatam 1 Comment

1

A transistor or BJT multivibrator is a two-stage switching circuit that is configured in a cross-coupled manner. This allows each of the active BJT stages to be regeneratively cross-coupled with the other BJT stage, so that one switches ON when the other switches OFF, and vice versa. This cross-coupling may be set up to switch either a […]

Filed Under: Oscillator Circuits Tagged With: Astable, Bistable, Circuits, Monostable, Multivibrator, Transistor

50 Amp Transistor MJ11032, MJ11033 Datasheet, Pinout

Last Updated on May 18, 2026 by Swagatam 5 Comments

50 amp transistor

If you are looking for high current transistors in the range of 50 amps with a complementary pair, then you can try these Darlington transistors MJ11032 and MJ11033. The MJ11032 transistor is a Darlington NPN power transistor while the MJ11033 is its complementary PNP transistor which is also a Darlington power BJT. Main features The […]

Filed Under: Datasheets and Components Tagged With: Datasheet, MJ11032, MJ11033, Pinout, Transistor

  • « Go to Previous Page
  • Page 1
  • Page 2
  • Page 3
  • Page 4
  • Interim pages omitted …
  • Page 8
  • Go to Next Page »

Primary Sidebar

My YouTube Channel

Circuit Simulator: Draw and Simulate Schematics

circuit simulator image

Categories

  • Arduino Projects (95)
  • Audio and Amplifier Projects (134)
  • Automation Projects (18)
  • Automobile Electronics (104)
  • Battery Charger Circuits (90)
  • Datasheets and Components (109)
  • Electronics Theory (151)
  • Energy from Magnets and Earth (43)
  • Games and Sports Projects (11)
  • Grid and 3-Phase (20)
  • Health related Projects (27)
  • Home Electrical Circuits (13)
  • Indicator Circuits (16)
  • Inverter Circuits (98)
  • Lamps and Lights (161)
  • Meters and Testers (72)
  • Mini Projects (28)
  • Motor Controller (68)
  • Oscillator Circuits (30)
  • Pets and Pests (15)
  • Power Supply Circuits (91)
  • Remote Control Circuits (50)
  • Security and Alarm (65)
  • Sensors and Detectors (107)
  • SMPS and Converters (46)
  • Solar Controller Circuits (62)
  • Temperature Controllers (44)
  • Timer and Delay Relay (51)
  • Voltage Control and Protection (44)
  • Water Controller (37)
  • Wireless Circuits (31)

Subscribe to get New Circuits in your Email

Other Links

  • Privacy Policy
  • Cookie Policy
  • Disclaimer
  • Copyright
  • Videos
  • Sitemap

People also Search

555 Circuits | 741 Circuits | LM324 Circuits | LM338 Circuits | 4017 Circuits | Ultrasonic Projects | SMPS Projects | Christmas Projects | MOSFETs | Radio Circuits | Laser Circuits | PIR Projects |

Recent Comments

  • Swagatam on Inverter Circuit with Feedback Control
  • Swagatam on How to Make Step Down Transformers
  • Jerry Adeosun on Inverter Circuit with Feedback Control
  • Pedro Lima on How to Make Step Down Transformers
  • Martins Vita on Understanding IC 4043B, IC 4044B CMOS Quad 3-State R/S Latch – Working and Pinouts

Social Profiles

  • Twitter
  • YouTube
  • Instagram
  • Pinterest
  • My Facebook-Page
  • Stack Exchange
  • Linkedin

Calculators

  • ZVS Induction Heater + Tank Calculator Tool
  • Zener Diode Calculator
  • Wire Current and Thickness Calculator (Ampacity Calculator)
  • Voltage Divider Calculator
  • Transistor Base Resistor Calculator
  • Transistor Astable Multivibrator Calculator
  • TL431 Calculator
  • Solar Panel, Inverter, Battery Calculator
  • Ferrite Core Air Gap Calculator Tool
  • Parallel MOSFET Calculator Tool: How to Connect MOSFETs in Parallel Safely
  • LC Resonance Calculator for EV Battery Charger Circuits
  • LED String Series Resistor Calculator
  • PFC (Power Factor Correction) Calculator Tool: 3kW
  • Passive Power Factor Correction (PFC) Calculator
  • LM567 IC Calculator Tool
  • SMPS Flyback Boost Converter Calculator
  • Shunt Resistor Calculator for Ammeters
  • SCR and Triac Gate Resistor Calculator
  • Battery Back up Time Calculator
  • Boost Converter Calculator (Non-Isolated)
  • Bootstrap Capacitor Calculator
  • Buck Converter Calculator
  • Buck-Boost Converter Calculator
  • Capacitance Reactance Calculator
  • DCM Flyback Transformer & Wire Gauge Wire Size Calculator Tool
  • Filter Capacitor Calculator
  • IC 4047 Calculator (Frequency and PWM)
  • IC 4060 Calculator
  • IC 555 Astable Calculator
  • IC 555 Monostable Calculator
  • IC SG3525, SG3524 Calculator
  • Inductance Calculator
  • Induction Heater Inductor and Resonant Frequency Calculator
  • Induction Heater Work Coil Calculator
  • Inverter LC Filter Calculator
  • LC Resonance Calculator
  • LED Current Calculator
  • LM317, LM338, LM396 Calculator
  • NAND/NOT Gate RC Values Calculator
  • NOT, NAND Gate Frequency Calculator
  • Notch Filter Calculator Tool
  • Ohm’s Law Calculator
  • Phase Angle Phase Shift Calculator
  • Power Factor (PF) Calculator
  • RC Filter Calculator
  • Reactance Calculator
  • Sine Table Calculator for SPWM Arduino Code
  • Small Signal Transistor(BJT) and Diode Quick Datasheet
  • SMPS Calculator for Toroidal Ferrite Transformers
  • SMPS Flyback Transformer Calculator – Design by Target Duty Cycle
  • TL431 Calculator
  • Op-Amp Hysteresis Resistor Calculator

© 2026 · Swagatam Innovations