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Op-amp with an adjustable voltage reference [21] LM614 Quadruple op-amps with an adjustable voltage reference [22] LM675 Power op-amp with a maximal current output of 3 amperes [23] LM709 Yes General-purpose op-amp [24] LM741 LM709 General-purpose op-amp. [25] Widely used. LM747: Yes General-purpose dual op-amp. [26] LM748
Single-chip AM radio integrated circuit from 1972. LM317: Adjustable 1.5 A positive voltage regulator (1.25 V-37 V) [8] LM13700: Two current controlled operational transconductance amplifiers (OTA), each having differential inputs and a push-pull output. LM393 No Dual Differential Comparator [9] LM358: No Low power, wide supply range dual op ...
A typical example are Howland current source [2] and its derivative Deboo integrator. [3] In the last example (Fig. 1), the Howland current source consists of an input voltage source, V IN, a positive resistor, R, a load (the capacitor, C, acting as impedance Z) and a negative impedance converter INIC (R 1 = R 2 = R 3 = R and the op-amp).
LM317 can also be used to design various other circuits like 0 V to 30 V regulator circuit, adjustable regulator circuit with improved ripple rejection, precision current limiter circuit, tracking pre-regulator circuit, 1.25 V to 20 V regulator circuit with minimum program current, adjustable multiple on-card regulators with single control ...
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.
Signal is applied at V in, output taken from node V out may be a voltage or a current. Figure 2: Basic NPN common base circuit (neglecting biasing details). Current source I C represents an active load. In Figure 1 the load is a resistor, and the current through the resistor is determined by Ohm's law as:
The input voltage must always be higher than the output voltage by some minimum amount (typically 2.5 volts). This can make these devices unsuitable for powering some devices from certain types of power sources (for example, powering a circuit that requires 5 volts using 6-volt batteries will not work using a 7805). [10]
Closed-loop regulator circuits using the TL431 are always designed to operate in high transconductance mode, with I CA no less than 1 mA (point D on the current-voltage curve). [8] [7] [2] For better control loop stability, optimal I CA should be set at around 5 mA, although this may compromise overall efficiency. [30] [7]