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Colpitts Oscillator Using Proteus software
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=03zSHaS0TYM
Download Proteus Software + keygen here http://adf.ly/DoAVY • Download this circuit here (proteus file) here http://adf.ly/AWaSm • A Colpitts oscillator is the electrical dual of a Hartley oscillator. Fig. 1 shows the basic Colpitts circuit, where two capacitors and one inductor determine the frequency of oscillation. The feedback needed for oscillation is taken from a voltage divider made of two capacitors, whereas in the Hartley oscillator the feedback is taken from a voltage divider made of two inductors (or a single, tapped inductor). • As with any oscillator, the amplification of the active component should be marginally larger than the attenuation of the capacitive voltage divider, to obtain stable operation. Thus, a Colpitts oscillator used as a variable frequency oscillator (VFO) performs best when a variable inductance is used for tuning, as opposed to tuning one of the two capacitors. If tuning by variable capacitor is needed, it should be done via a third capacitor connected in parallel to the inductor (or in series as in the Clapp oscillator). • Fig.shows an often preferred variant, where the inductor is also grounded (which makes circuit layout easier for higher frequencies). Note that feedback energy is fed into the connection between the two capacitors. This amplifier provides current, not voltage, amplification. • ISIS Schematic Capture - a tool for entering designs. • PROSPICE Mixed mode SPICE simulation - industry standard SPICE3F5 simulator combined with a digital simulator. • ARES PCB Layout - PCB design system with automatic component placer, rip-up and retry auto-router and interactive design rule checking. • VSM - Virtual System Modelling lets cosimulate embedded software for popular micro-controllers alongside hardware design. • System Benefits Integrated package with common user interface and fully context sensitive help. • Proteus is software for microprocessor simulation, schematic capture, and printed circuit board (PCB) design. It is developed by Labcenter Electronics.
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