1. The IRLP board has no audio transformers or bypass capacitors . 2. A bypass capacitor was often added to prevent the device from attenuating AC signals such as transmitted voice. 3. In the past, the bypass capacitor in the probe head was adjustable ( to achieve this 10?attenuation ). 4. :Meanwhile, the purpose of the bypass capacitor around any external emitter resistance is to make that impedance low for DC signals. 5. To decouple a subcircuit from AC signals or voltage spikes on a power supply or other line, a bypass capacitor is often used. 6. A bypass capacitor is to shunt energy from those signals or transients past the subcircuit to be decoupled, right to the return path. 7. For a power supply line, a bypass capacitor from the supply voltage line to the power supply return ( neutral ) would be used. 8. So it can be important to keep the supply clean of higher frequency ripples and signals, e . g . by the use of bypass capacitors . 9. In fact, if you're good at soldering, it's likely the entire motherboard could be resuscitated by the installation of new bypass capacitors . 10. An alternative name is "'bypass capacitor "'as it is used to bypass the power supply or other high impedance component of a circuit.
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