Application Notes/KOA Corporation

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	Application Notes

The usage of KOA's products are introduced through application examples.

	Usage of Resistors			Usage of Thermo-sensitive devices and Thermistors
	Usage of Current Fuses and Fusing Resistors
	Usage of Inductors			Usage of Jumpers
	Application examples of KOA's products

Usage of Resistors


	•Resistors to limit the rush current
	•Power type Resistors (Wire-wound type and Metal-oxide Film type)
	•Resistors to absorb the surge current-1 (snubber circuit)
	•Discharge Path Resistors for safety standard
	•Discharge Path Resistors for antenna circuit
	•Resistors to absorb the surge current-2 (CRT monitor)
	•Current Detecting Resistors
	•Resistors with reduced self-inductance improves sensing accuracy
	•Practical method to measure the electric current(Four point probe method)
	•Resistors to detect over-current
	•Precision pair resistors for operational amplifiers
	•Precision pair Resistors for differential amplifiers
	•Precision Resistors, a multiplexing practice
	•Reduction of current noise
	•Resistors for VCO circuit
	•Pull-up Resistors/Pull-down Resistors/Dumping Resistors
	•Resistors to terminate digital circuit
	•Resistors to terminate digital transmission line

Usage of Thermo-sensitive devices and Thermistors


	Thermo-sensitive devices, where to use
	Temperature compensation of high frequency amplifiers
	Temperature compensation of Hall elements
	Temperature compensation of Optical pick-up
	Thermistors in detail
	Linearization of the thermistor
	Thermistors to control the LCD

Usage of Current Fuses and Fusing Resistors


	Current Fuses and Fusing Resistors
	Current Fuses, where to use
	Fusing Resistors, where to use
	Resistor to suppress parasitic oscillation of emitter follower circuit
	Resistor to stabilize FET switching operation

Usage of Inductors


	Chip Inductors for VCO
	Chip Inductors for TV-tuner isolation

Usage of Jumpers


	Zero-ohm resistors (jumper wires)

Application examples of KOA's products