A new intelligent IGBT for automotive ignition system with a precise and stable constant current limiting circuit has been shown to operate at a constant current of 11±1.0 A between - 40°C and +150°C. The IGBT also has a stable clamping voltage of 410±10 V between -40°C and +150...
Based on the signal inputted, the current controller 8 discriminates the type of the ink ribbon 1 through microprogram control, and this information is outputted to the driving circuit 2 through a constant-current information line 11 and a D/A converter 9 so that a constant current according ...
The current limiting signal may be applied to the common control terminal 23 via a resistor 33. (Fig. 4), or may be applied to a control MOSFET 7. If an adjustable voltage rather than a constant reference voltage 5, is applied to the reference input of amplifier 4, the circuit may be...
将“constant-current diode"翻译成中文 定電流二極體是将“constant-current diode"翻译成 中文。 译文示例:The present invention adopts an alternating-current LED drive circuit in which four rectifier diodes and one constant-current diode drive the LEDs, so that the utilization of the LEDs reaches ...
Step 4: LED Current Limiting Circuits There are many ways to limit the current to an LED. Several techniques are described below for a supply voltage ofVsand a desired (maximum) current ofIf. Five simple ones are shown above inFalstad Circuit SimulatormarkedAtoEwith four of them featuring on...
Constant current charge pump light-emitting diode (LED) drive circuit The invention discloses a constant current charge pump light-emitting diode (LED) drive circuit which is used for limiting the surge current of the LED dri... 王钦恒 被引量: 0发表: 2011年 Constant Current Pump Single-Cell...
LED constant-current drive circuit An LED constant-current drive circuit includes a BUCK circuit consisting of a transformer T, a diode D, a capacitor C and a field effect transistor Q a voltage limiting circuit consisting of a resistor R, a diode D, a capacitor C, a resi... G Yuan,Y...
160-161, "Fets Provide Current Limiting . . . . " by Graveff et al. Primary Examiner: Goldberg, Gerald Attorney, Agent or Firm: Fasse W. G. Roberts W. W. Claims: What is claimed is: 1. A constant current circuit arrangement comprising a pair of enhancement type MOSFETs having ...
CONSTANT CURRENT LED POWER SUPPLY CIRCUIT WITH MAXIMUM OUTPUT POWER LIMITING CIRCUIT The invention relates to a constant current LED power supply circuit with maximum output power limiting circuit, including a single-stage constant voltage power supply circuit, a DC-DC constant current output circuit,...
Needed constant current is provided for load by input given current; and the constant-current source circuit comprises a field effect transistor VT, a first operational amplifier A1, a second operational amplifier A2, a current-limiting resistor R0, a first resistor R1, a second resistor R2, a...