Our company WEET currently produces parallel resistors, which are combinations of capacitors and resistors connected in parallel.
Adding resistors to capacitors is usually to achieve specific circuit functions, commonly used in scenarios such as filtering, current limiting, and voltage stabilization. The following are specific application scenarios and principles:
Filter circuit
Connecting a resistor (RC filter) in series in a capacitor filter circuit can slow down the charging speed of the capacitor and make the voltage change smoother.
When pulsating current arrives, the capacitor quickly charges to the power supply voltage and then discharges through the load.
The presence of resistance slows down the discharge speed and reduces voltage fluctuations, resulting in a more stable output.
Current limiting protection
Resistors can limit the instantaneous current during capacitor charging, preventing large currents from impacting the power supply or components.
Especially at the moment of power on, connecting small resistance resistors in series can suppress transient voltage and protect circuit components.
Extend the lifespan of capacitors
Resistors limit the charging current and reduce the internal heat generation of capacitors, thereby extending their service life.
Stable voltage
In the integration circuit, parallel resistors can provide DC negative feedback to prevent the capacitor from saturating the operational amplifier due to continuous charging of the DC signal.
Zero point compensation
In integrated circuit design, a zero compensation network can be generated by connecting resistors and capacitors in series, which is used to improve amplifier bandwidth or suppress parasitic capacitance effects.
