What to consider when programming a DC power supply
Programmable DC power supplies use power semiconductors as switches, and adjust the output voltage by controlling the duty cycle of the switches.
Its control circuit topology is divided into current mode and voltage mode. Current mode control is widely used due to its advantages of fast dynamic response, simplified compensation circuit, large gain bandwidth, small output inductance and easy current sharing.
In order to help you better choose programmable DC power supply;
The following editor will introduce what factors to consider when choosing a programmable DC power supply:
Programmable rise time:
This is an aspect that many test applications need to focus on, such as LED testing, the instantaneous current at startup may be much larger than the LED operating current, and the work is stable, causing damage to the LED equipment.
To prevent damage from transient voltage overshoot spikes during startup, the device under test power rise time or has a programmable voltage and current slew rate control function and constant current priority settings to reduce overshoot for the LED supply voltage and current.
Battery simulation function:
To test power circuits or devices under actual conditions, use a test source with battery characteristics.
For example, the internal resistance of the power supply is changed, so the voltage applied to the battery powered device will fall within the internal resistance of the battery.
Programmable DC power and 833m Ω programmable output resistance, don't underestimate the 833m Ω programmable resistance;
It can complete the simulation of battery internal resistance and power battery performance, which is the key.
As an energy conversion device, programmable DC power supply has been widely used in the fields of electronics, electrical equipment and home appliances due to its advantages of small size, light weight, high efficiency and stable performance, and has entered a period of rapid development.
So do you know what cables are commonly used in programmable DC power supplies?
1. RVV
The full name is copper core PVC insulated PVC sheathed flexible cable.
The RVV cable has a round appearance, a large number of cores, and 2 cores are stranded. R stands for cord and the letter V stands for insulator polyvinyl chloride (PVC).
The main purpose of RVV cable:
It is used in programmable DC power lines, control lines and signal transmission lines that do not require shielding such as electrical appliances, instrumentation and electronic equipment and automation devices.
2. RVVP
The full name is copper core PVC insulated PVC shielded flexible cable.
It is suitable for communication, audio, broadcasting, audio system, anti-theft alarm system, intelligent automation system, automatic meter reading system, fire protection system, etc.
The letter R stands for flexible wire, the letter V stands for insulator polyvinyl chloride (PVC), and the letter P stands for shielding.
RVVP can be used for control lines in monitoring systems, access control systems, building video intercom systems, and building control systems.
