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  2. Dell PowerConnect - Wikipedia

    en.wikipedia.org/wiki/Dell_PowerConnect

    It is always possible to run a newer firmware operational code on a previous bootcode unless specifically noted in the release notes. In this case, the upgrade will automatically update the boot code during upgrade. When updating a stack, it is a best practice to individually update the stack members using the update bootcode <unit> command.

  3. Current source - Wikipedia

    en.wikipedia.org/wiki/Current_source

    Figure 1: An ideal current source, I, driving a resistor, R, and creating a voltage V. A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it. A current source is the dual of a voltage source. The term current sink is sometimes used for sources fed from a negative ...

  4. Welding power supply - Wikipedia

    en.wikipedia.org/wiki/Welding_power_supply

    A transformer-style welding power supply converts the moderate voltage and moderate current electricity from the utility mains (typically 230 or 115 VAC) into a high current and low voltage supply, typically between 17 and 45 (open-circuit) volts and 55 to 590 amperes. A rectifier converts the AC into DC on more expensive machines.

  5. SRM firmware - Wikipedia

    en.wikipedia.org/wiki/SRM_firmware

    Upon system initialization, an Alpha AXP computer set to boot from the SRM console displays a short report of the software version of the firmware, and presents the "three chevron prompt" consisting of three greater-than signs: Digital Personal WorkStation 433au Console V7.2-1 Mar 6 2000 14:47:02 >>>

  6. Unified Diagnostic Services - Wikipedia

    en.wikipedia.org/wiki/Unified_Diagnostic_Services

    Freeze Current State: The device shall freeze the current signal value. ShortTermAdjustment: The device shall use the provided value for the signal Remote Activation of Routine 0x31 0x71 Routine Control Control routine services of all kinds can be performed. There are three different message types: With the start-message, a service can be ...

  7. Regulated power supply - Wikipedia

    en.wikipedia.org/wiki/Regulated_power_supply

    A regulated power supply is an embedded circuit; it converts unregulated AC (alternating current) into a constant DC. With the help of a rectifier it converts AC supply into DC. Its function is to supply a stable voltage (or less often current), to a circuit or device that must be operated within certain power supply limits.

  8. Current mirror - Wikipedia

    en.wikipedia.org/wiki/Current_mirror

    Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well, or it could consist of a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ...

  9. Widlar current source - Wikipedia

    en.wikipedia.org/wiki/Widlar_current_source

    Current in the reference transistor Q 1 is held constant, thereby fixing the compliance voltage. Plots assume I C1 = 10 mA, V A = 50 V, V CC = 5 V, I S = 10 fA, β 1, = 100 independently of current. The current dependence of the resistances r π and r O is discussed in the article hybrid-pi model. The current dependence of the resistor values is: