|
Every rc car model has its own system. When focusing on voltage values, they usually support a diode power dissipation of 500 mW for the smallest and 1W for the largest. While these values ??are not exceeded the diode can operate in breakdown voltage as long as desired. You can look at images to observe a fixed voltage source and application of a 12V diode. Car power adapter You can find an example of a diode regulated 6.8 V applied to the base of a power transistor. In the transmitter 800 mV are obtained but at least a current of 1A load practically. Thus, the rc car circuit reduces and regulates the 12V car battery for a team that requires 6V and 1A of consumption. We recommend that the student test the circuit by varying the supply voltage between 11 and 13.5 V and record the minimum variation in output voltage. You can also vary the load resistance and observe that the output voltage practically does not change. The varactor is an application of alternating current in reverse biased diode. According to the theory put forward when the diode is polarized in a minimal reverse current flows only for him due to the recombination of minority carriers. But on the joint is a large amount of fixed rc car electric charge, which depends on the applied voltage. These two qualities are the same that has a variable capacitor and therefore we can imagine the diode as a voltage-dependent capacitor. Of course, the varactor diode has its limitations. On the there can be very high because AC voltage be transformed into a nonlinear capacitor whose capacity varies with the cycle of the AC voltage superimposed on it, while the voltage is a significant part of the reverse bias voltage. The immediate application of a rc car varactor diode is a circuit of variable frequency tuning could be for example the antenna coil of a modern solid state super heterodyne. Figure 30.5.2 shows the corresponding circuit. Antenna circuit Reading with the cursor, IT can be seen that the resonance peak is about 500 KHz. If you change the cursor position and the potentiometer, it can be seen that the resonance rc car frequency increases until it reaches 12V to about 1800 kHz, which covers the entire band of OM. Even rc fans do not try the reverse bias that has so much as the direct application.
Related Articles -
rc, car,
| 
