resistor

(1) Sampling resistor - a sampling circuit that forms the output voltage and sends the sampled voltage to the feedback circuit;

(2) Equalizing resistor - also known as balancing resistor, plays a role in equalizing voltage in symmetrical DC input circuits of switching power supplies;

(3) Voltage divider resistor - constitutes a resistive voltage divider;

(4) Discharge resistor - can discharge the charge stored in the capacitor of the electromagnetic interference (EMI) filter during power failure;

(5) Current limiting resistor - the effect of current limiting maintenance, such as current limiting resistors used as voltage regulators, optocouplers, and input filtering capacitors;

(6) Current detection resistor - used in conjunction with overcurrent maintenance circuits to limit the output current limit of switching power supplies;

(7) Diverting resistor - supplying a bypass for current supply;

(8) Load resistance - the load resistance of a switching power supply (including equivalent load resistance);

(9) Minimum load resistance - the minimum load resistance required to maintain the normal operation of a switching power supply, which can avoid high output voltage caused by open circuit of the load;

(10) Fake load - a temporary load (such as resistance wire, cement resistance) connected during the testing of switch power supply performance indicators;

(11) Filter resistor - used as a filter resistor in LC type filters, RC type filters, and π - type filters;

(12) Bias resistor - supplies bias voltage to the control terminal of a switching power supply or is used to stabilize the operating point of a transistor;

(13) Maintain resistance - commonly used in RC type absorption circuits or VD, R, C type clamp maintenance circuits;

(14) Frequency compensation resistors - such as RC type frequency compensation networks that form error amplifiers;

(15) Damping resistor - to avoid resonance in the circuit.

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