Computers parallel port is generally used to send or receive binary signals while interfacing with the external devices. We can use switches, micro-controller pins or some IC pins to connect to parallel port. Pin-out of Parallel port: The parallel port consists of 8 data pins and 4 status pins .We can use data pins as […]
Tag: power supply
Bidirectional Current Buffer
The L293 and L293D are quadruple high-current half-H drivers. The L293 is designed to provide bidirectional drive currents of up to 1 A at voltages from 4.5 V to 36 V. The L293D is designed to provide bidirectional drive currents of up to 600-mA at voltages from 4.5 V to 36 V. All inputs are […]
Current Buffer
The ULN2001A, ULN2002A, ULN2003 and ULN2004A are high voltage, high current darlington PIN CONNECTION arrays each containing seven open collector dar- lington pairs with common emitters. Each channel rated at 500mA and can withstand peak currents of 600ma. WHERE TO USE: These versatile devices are useful for driving a wide range of loads including solenoids, […]
Q: How Load affects power supply
When ever we use any power supply, we must take care of the ratings of the power supply. If the system requires more than what is required then we may face many problems: CASE : When current extracted from the power source is greater than maximum current rating Example1: Suppose we have a battery of voltage […]
Q: Selection of Power Supply
REQUIREMENTS: Suppose I have the requirement of a power source with very high current rating of 5A and 6V but lighter in weight. Also we can’t have a supply of 220 V to the system. SELECTION: As we can’t have a 220V, hence we can’t design the power supply our self by transforming AC to […]
Power Supply – Introduction
The power supply is a critical component for any system. No motor or IC would run without power supply. There are various options which can be considered while looking for a power supply. Designing specific DC power supply from AC source Battery power