Transformer-Based AC Bulb Control Circuit with NPN Transistor and Potentiometer
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Circuit Documentation
Summary
This document provides a detailed overview of a circuit design that includes various components such as a power transformer, NPN transistor, capacitors, diodes, resistors, a potentiometer, a 9V battery, and an AC bulb. The document is divided into sections that describe each component, their wiring details, and any embedded code used in the circuit.
Component List
Power Transformer (dual primary / dual secondary)
- Pins: 1 - Primary, 2 - Primary, 3 - Primary, 6 - Primary, 7 - Primary, 5 - Primary, 8 - Primary, 4 - Primary
- Description: Not provided
- Purpose: Not provided
NPN Transistor (EBC)
- Pins: emitter, base, collector
- Description: Not provided
- Purpose: Not provided
Tantalum Capacitor
- Pins: -, +
- Capacitance: 0.000001 Farads
- Description: Not provided
- Purpose: Not provided
Diode
- Pins: cathode, anode
- Description: Not provided
- Purpose: Not provided
Electrolytic Capacitor
- Pins: -, +
- Capacitance: 0.00047 Farads
- Description: Not provided
- Purpose: Not provided
Electrolytic Capacitor
- Pins: -, +
- Capacitance: 0.0001 Farads
- Description: Not provided
- Purpose: Not provided
Potentiometer
- Pins: GND, Output, VCC
- Description: Not provided
- Purpose: Not provided
Resistor
- Pins: pin1, pin2
- Resistance: 352 Ohms
- Description: Not provided
- Purpose: Not provided
Electrolytic Capacitor
- Pins: -, +
- Capacitance: 1e-7 Farads
- Description: Not provided
- Purpose: Not provided
Resistor
- Pins: pin1, pin2
- Resistance: 25 Ohms
- Description: Not provided
- Purpose: Not provided
9V battery
- Pins: +, -
- Description: Not provided
- Purpose: Not provided
AC Bulb
- Pins: P, N
- Description: Not provided
- Purpose: Not provided
Wiring Details
Power Transformer (dual primary / dual secondary)
1 - Primary is connected to:
- Potentiometer (VCC)
- Electrolytic Capacitor (-) (0.00047 Farads)
2 - Primary is connected to:
- Resistor (pin2) (352 Ohms)
- Resistor (pin2) (25 Ohms)
- Electrolytic Capacitor (-) (1e-7 Farads)
3 - Primary is connected to:
- Diode (anode)
- NPN Transistor (collector)
6 - Primary is connected to:
- 7 - Primary (same transformer)
5 - Primary is connected to:
- AC Bulb (N)
8 - Primary is connected to:
- AC Bulb (P)
4 - Primary is connected to:
- Tantalum Capacitor (+) (0.000001 Farads)
- NPN Transistor (base)
NPN Transistor (EBC)
emitter is connected to:
- Tantalum Capacitor (-) (0.000001 Farads)
- Electrolytic Capacitor (+) (1e-7 Farads)
base is connected to:
- Power Transformer (4 - Primary)
collector is connected to:
- Power Transformer (3 - Primary)
Tantalum Capacitor
+ is connected to:
- Power Transformer (4 - Primary)
- NPN Transistor (base)
- is connected to:
- Electrolytic Capacitor (+) (1e-7 Farads)
- NPN Transistor (emitter)
Diode
cathode is connected to:
- Diode (cathode)
- Electrolytic Capacitor (+) (0.00047 Farads)
anode is connected to:
- Power Transformer (3 - Primary)
- Electrolytic Capacitor (-) (0.0001 Farads)
Electrolytic Capacitor (0.00047 Farads)
- is connected to:
- Power Transformer (1 - Primary)
- Potentiometer (VCC)
+ is connected to:
- Diode (cathode)
Electrolytic Capacitor (0.0001 Farads)
- is connected to:
- Diode (anode)
- 9V battery (-)
+ is connected to:
- 9V battery (+)
- Resistor (pin1) (25 Ohms)
Potentiometer
GND is connected to:
- Potentiometer (Output)
- Resistor (pin1) (352 Ohms)
Output is connected to:
- Potentiometer (GND)
- Resistor (pin1) (352 Ohms)
VCC is connected to:
- Power Transformer (1 - Primary)
- Electrolytic Capacitor (-) (0.00047 Farads)
Resistor (352 Ohms)
pin1 is connected to:
- Potentiometer (GND)
- Potentiometer (Output)
pin2 is connected to:
- Power Transformer (2 - Primary)
Resistor (25 Ohms)
pin1 is connected to:
- Electrolytic Capacitor (+) (0.0001 Farads)
- 9V battery (+)
pin2 is connected to:
- Power Transformer (2 - Primary)
9V battery
+ is connected to:
- Electrolytic Capacitor (+) (0.0001 Farads)
- Resistor (pin1) (25 Ohms)
- is connected to:
- Electrolytic Capacitor (-) (0.0001 Farads)
AC Bulb
P is connected to:
- Power Transformer (8 - Primary)
N is connected to:
- Power Transformer (5 - Primary)
Embedded Code
No embedded code is used in this circuit.