Check and 49 datasheet and eliminate self-oscillation as follows: (1) First determine the type of oscillation, is part of a continuous oscillation, transient oscillations, or intermittent oscillation, and 49 price and estimate the oscillation frequency range. Since there are basically three parts oscillating source, there amplification of the circuit, the feedback branches, wiring and 49 suppliers and components. Therefore, analysis of this order may be a major part of the oscillation. If that is the enlarged part, you can reduce the gain to see if the oscillation stops, such as the oscillation stop, you can narrow the scope to enlarge circuit; if that part of the oscillation is due to feedback, the feedback may be appropriate to reduce the depth (depth feedback can not be reduced too small, otherwise the amplifier performance improv...

1) Capacity choice present, double-layer capacitors is the most widely used as a memory backup power supply, because of its low power consumption (more than ten microamps to a few microamps), so double-layer the memory capacitor can be continuously carried out dozens of hours to hundreds of hours of protection. In addition, the capacitor is often used in electronic circuits in the transient voltage fluctuations in the main stable when the main power supply and 49 datasheet and support of instant power off. As the use of standby power to do so, the application must be aware of the protected circuit when some basic conditions, these conditions include the following aspects: (1) required to maintain stable memory or the minimum line voltage Ei; (2) required to maintain stable memory or line current,; ...