Joule Thief for CFL
#Joule Thief
#CFL
#energy efficient
#low voltage
#transistor
#oscillator
#DIY
#LED driver
#battery powered
#circuit
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Transistor Hartley Oscillator
Any vacuum-tube oscillator configuration has an equivalent transistor circuit. For example, consider the vacuum-tube oscillator, illustrated in Fig. 6-1 (A), which represents one form of Hartley oscillator. Positive feedback is accomplished by arranging the resonant tank E to be common...
Transistor Circuits
This page presents several transistor circuits that are not commonly found on other pages due to the absence of a specific topic. These circuits, however, illustrate particular points but lack detailed descriptions. An example of an RF amplifier circuit using...
audio tone control with 2 transistor
The first BC109C transistor functions as a buffer, offering the circuit an input impedance of approximately 250,000 ohms and a voltage gain just below unity. As the Baxandall tone control circuit is a passive design, it attenuates all audio frequencies....
Unsteady direct coupling circuit diagram
The collector and base-emitter bias of the transistor are directly coupled to each other. Each transmitter circuit controls the capacity conversion function. The emitter generates a triangular wave. The two transistors are not continuously in an active state. Instead, the...
easy build motocycle alarm
The circuit requires two transistors to drive a relay, which acts as a switch to activate a buzzer. Any number of normally-open switches may be applied. Mercury switches should be installed to ensure they close when the steering is engaged....
Transistor Pin Identifier
Tests transistors and diodes for polarity. A three-phase waveform is derived from the 350Hz ring-of-three oscillator formed by IC1A, IC1B, and IC1C, and applied to the device under test via the LEDs. The oscillator waveform enables each pair of device...
Joule Thief Circuit Kit
A steam engine powered carousel project that utilizes the Joule Thief circuit.
The project involves the design and construction of a carousel that is powered by a steam engine, showcasing the principles of mechanical motion and energy conversion. The Joule Thief...
Flashing Light Circuit with Transistors
This simple flashing light circuit operates at 6 volts and 0.5A, exhibiting low current consumption when the light bulb is turned off. The frequency of the flashing is predetermined.
The circuit consists of a power supply, typically a battery or a...
80W-3-30mhz-amplifier
This amplifier employs a 2N6367 transistor as a driver along with a pair of 2N6368 transistors. The 2N6367 is rated for a maximum output of 9 W (PEP) and is required to deliver 5 W (PEP) at 30 MHz, achieving...