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ULN2003A pinout Simplified ULN2003A logical pinout diagram.. The ULN2003A is an integrated circuit produced by Texas Instruments.It consists of an array of seven NPN Darlington transistors capable of 500 mA, 50 V output.
(from top) Single-pole reed switch, four-pole reed switch and single-pole reed relay. Scale in centimeters. A reed relay [i] is a type of relay that uses an electromagnet to control one or more reed switches. The contacts are of magnetic material and the electromagnet acts directly on them without requiring an armature to move them.
A relay Electromechanical relay principle Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts An automotive-style miniature relay with the dust cover taken off. A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple ...
It was the first multifunctional time-delay relay, and due to its purely electromechanical basis, is still used in many ways. Electromechanical (and later electronic) time-delay relays made “Schleicher Relais Werke” internationally known. [3] [4] In 1976, Schleicher developed and marketed a programmable controller (PLC).
It features 10 I/Os, a 10-pin ISP programming connector, a connector for a standard LCD display (in 4 bit mode) and a connector for a 2.4 GHz RF module. Spider Controller [ 206 ] Arduino Mega compatible board designed specifically for robots requiring large numbers of servos.
The module size and shape were approximately the same as the EEC-II and still utilized the external memory module. The two modules had differently keyed connectors to prevent accidental insertion in the wrong vehicle. EEC-III uses a Duraspark III module (brown grommet where wires emerge) and a Duraspark II ignition coil. A resistance wire is ...
A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.
The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...