enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Open collector - Wikipedia

   en.wikipedia.org/wiki/Open_collector

   Open emitter output exposes the emitter as the output. [2] For an NPN open emitter output, the collector is connected to the positive voltage rail, so the emitter outputs a high voltage when the transistor is on and is hi-Z when off. For a PNP open emitter output, the collector is connected to the low voltage supply, so the emitter outputs a ...

3. Emitter-coupled logic - Wikipedia

   en.wikipedia.org/wiki/Emitter-coupled_logic

   The value of the supply voltage is chosen so that sufficient current flows through the compensating diodes D1 and D2 and the voltage drop across the common emitter resistor R E is adequate. ECL circuits available on the open market usually operated with logic levels incompatible with other families.

4. Wired logic connection - Wikipedia

   en.wikipedia.org/wiki/Wired_logic_connection

   Open-emitter buffers connected as wired OR. See also: Diode logic § Active-high OR logic gate. The wired OR connection electrically performs the Boolean logic operation of an OR gate using open emitter or similar inputs (which can be identified by the ⎏ symbol in schematics) connected to a shared output with a pull-down resistor. This gate ...

5. Common collector - Wikipedia

   en.wikipedia.org/wiki/Common_collector

   The transistor continuously monitors V diff and adjusts its emitter voltage to equal V in minus the mostly constant V BE (approximately one diode forward voltage drop) by passing the collector current through the emitter resistor R E. As a result, the output voltage follows the input voltage variations from V BE up to V +; hence the name ...

6. Low-dropout regulator - Wikipedia

   en.wikipedia.org/wiki/Low-dropout_regulator

   Low-dropout (LDO) regulators operate similarly to all linear voltage regulators.The main difference between LDO and non-LDO regulators is their schematic topology.Instead of an emitter follower topology, low-dropout regulators consist of an open collector or open drain topology, where the transistor may be easily driven into saturation with the voltages available to the regulator.

7. Bipolar transistor biasing - Wikipedia

   en.wikipedia.org/wiki/Bipolar_transistor_biasing

   Emitter bias. When a split supply (dual power supply) is available, this biasing circuit is the most effective. It provides zero bias voltage at the emitter or collector for load. [clarification needed] The negative supply V ee is used to forward-bias the emitter junction through R e. The positive supply V cc is used to reverse-bias the ...

8. Switched-mode power supply - Wikipedia

   en.wikipedia.org/wiki/Switched-mode_power_supply

   In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. The switched-mode power supply's higher electrical efficiency is an important advantage. Switched-mode power supplies can also be substantially smaller and lighter than a linear supply because the transformer can be much smaller.

9. Bootstrapping (electronics) - Wikipedia

   en.wikipedia.org/wiki/Bootstrapping_(electronics)

   In switch-mode power supplies, the control circuits are powered from the output. To start the power supply, a leakage resistance can be used to trickle-charge the supply rail for the control circuit to start it oscillating. This approach is less costly and simpler than providing a separate linear power supply just to start the regulator circuit ...