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Which is undesirable in this case. Submitted by webmaster on 23 November Your email address will not be published. Always try to minimize the track length. Complete Technical Details can be found at the 2N datasheet given at the end of this page.

A Transistors acts as an Amplifier when operating in Active Region. This circuit uses only 10 parts including the v9018.

9018 Datasheet, Equivalent, Cross Reference Search

It can amplify power, voltage and current at different configurations. As the transistor supports very high frequency range, you could expect significant amount satasheet harmonics along with the main frequency. TL — Programmable Reference Voltage.

You can calculate the effective capacitance of the tuned LC circuit by determining the series capacitance of C2 and C3. This FM transmitter dayasheet performed well in terms of frequency stability, almost zero drifting after about 4 hours of continuous operation. Learn how your comment data is processed. Fix the inductor with some wax for better frequency stability. Notify me of new posts by email. When this transistor is fully biased then it can allow a maximum of mA to flow across the collector and emitter.


As mentioned the biasing current should maximum of 5mA. Notify dattasheet of follow-up comments by email. I really need it. Of the above types common emitter type is the popular and mostly used configuration.

This site uses Akismet to reduce spam. Amplifier modules like Audio amplifiers, signal Amplifier etc The value of IB should not exceed mA. When uses as an Amplifier the DC current gain of the Transistor can be calculated by using the below formulae.

The maximum amount of current that could flow through the Collector pin is mA, hence we cannot connect loads that consume more than mA using this transistor. Leave a Reply Cancel reply Your email address will not be published.

My prototype without the audio source connected, small enough to fit on a matchbox. The coil is winded on a 3 mm drill bit, 16 turns of 0.

FM transmitter circuit using C transistor – Circuits DIY

When a transistor is used as a switch it is operated in the Saturation and Cut-Off Region as explained above. If both C2 and C3 are equal, the effective capacitance will be the half.


The satasheet of this resistor RB can be calculated using below formulae. As discussed a transistor will act as an Open switch during Forward Bias and as a closed switch during Reverse Bias, this biasing can be achieved by supplying datwsheet required amount of current to the base pin. When base current is removed the transistor becomes fully off, this stage is called as the Cut-off Region and the Base Emitter voltage could be around mV.

G enameled copper wire.

(PDF) C9018 Datasheet download

To bias a transistor we have to supply current to base datasbeet, this current IB should be limited to 5mA. After that, the signals starts fading rapidly.

Anything more than 5mA will kill the Transistor; hence a resistor is always added in series with base pin. Please can You suggest simple as possible pll one.