hartley oscillator circuit tutorials
#hartley oscillator
#rf oscillator
#LC circuit
#frequency generation
#tuned circuit
#resonant circuit
#signal generator
#transistor oscillator
#feedback circuit
#electronic oscillator
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HARTLEY OSCILLATOR
The Hartley Oscillator is characterized by an LC circuit in its collector. The base of the transistor is held steady, and a small amount of signal is taken from a tapping on the inductor and fed to the emitter to...
Canary chirp generator
This is a simple electronic alarm circuit that imitates the chirping of a canary. The circuit consists of a Hartley oscillator with a few additional passive components. As capacitor C1 charges through resistor R1, transistor Q1 is driven to cut...
27Mhz and 49Mhz rf oscillator-transmitter
The modulator and oscillator comprise two NPN transistors. The base of the modulator transistor is powered by a bidirectional current source, with the voltage range for the high condition restricted by a saturating PNP collector connected to the pin 4...
Lc-checker
The circuit is based on the grid-dip or absorption effect, which occurs when a parallel resonant circuit is coupled to an oscillator of the same frequency. Q1 operates in a conventional Colpitts oscillator circuit at a fixed frequency of approximately...
1.8kHz signal generator circuit
The circuit depicted in the figure allows for the selection of optimal operating conditions and a suitable allocation of the temperature coefficient for the resonant circuit components. The resonance occurs at both ends of the circuit. Additionally, the exchange regulator...
100 MHz RF Oscillator Circuit
The following schematic diagram shows the design of a 100 MHz Radio Frequency RF Oscillator Circuit. The electrets microphone picks up and amplifies sound then fed it into the audio amplifier stage built around the first transistor. The output from...
Automobile-locater
This locator consists of two main components. The first component is an RF oscillator, with its circuit illustrated in Fig. 8-4a. The second component is a sensitive receiver, depicted in Fig. 8-4b. The core of the oscillator is a 555...
Signal Generator Electronic
This circuit illustrates a Signal Generator Electronic Circuit Diagram. Features: Unless otherwise specified, resistance values are in ohms.
The signal generator circuit is designed to produce various types of electrical signals, which can be sine, square, or triangular waves, depending on...
The Multi-purpose signal generator circuit
The multi-purpose signal generator circuit consists of integrated circuit oscillators and frequency dividers. It generates square waves ranging from high frequencies to sub-audio frequencies and also produces a frequency standard in the VHF range. The alternative oscillator section feeds the...