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circuitResults 1 - 10 of about 218
Flasher Circuit (16k) This two-transistor, two-wire circuit finds numerous applications.
[ file in PDF format ] - download Acrobat Reader
Category: Oscillators
Source: Wenzel Associates
| Op amp circuit #3- True balanced / instrumentation style input circuit.
Category: Audio
Source: DIBs Circats
| Solar Engine Circuit - Utra Efficient circuit runs small DC motor in a poorly lit room
Category: RC Modeling
Source: Interesting Schematics - Novotill
| Solar Engine Circuit - Utra Efficient circuit runs small DC motor in a poorly lit room
Category: Power Suply
Source: Interesting Schematics - Novotill
| Op amp circuit #5- Single supply op amp circuit.
Category: Miscellaneous
Source: DIBs Circats
| Op amp circuit #5- Single supply op amp circuit.
Category: Audio
Source: DIBs Circats
| ±4 TO ±18 VOLT, 500 MILLIAMPERE D.C. POWER SUPPLY. This is a simple, general-purpose power supply intended for laboratory applications that require both a positive and negative current. The circuit uses commonly-available integrated circuit regulators that provide integral thermal overload protection as well as safe-area limiting.
[ file in RAR format ] - download WinRAR
Category: Power Suply
Source: Art's Theremin Page
| UNIPOLAR STEPPER MOTOR CONTROL CIRCUIT. This circuit controls a small, four-phase, five-wire, unipolar stepper motor, commonly designated the "KP4M4-001." This type of motor was used in many 5 1/4" floppy disk drives in older computers. Now obsolete, such disk drives are often available on the surplus market for a small fraction of the motor's original cost. The stepper motors are easy to extract from the drives, and are ideal for many applications. This arrangement was used in the scale model of a RADAR set to control the position of a miniature parabolic antenna. (Note that some 5 1/4" floppy disk drives used a four-wire "bipolar" motor, which is not compatible with this circuit.)
[ file in RAR format ] - download WinRAR
Category: Computer
Source: Art's Theremin Page
| UNIPOLAR STEPPER MOTOR CONTROL CIRCUIT. This circuit controls a small, four-phase, five-wire, unipolar stepper motor, commonly designated the "KP4M4-001." This type of motor was used in many 5 1/4" floppy disk drives in older computers. Now obsolete, such disk drives are often available on the surplus market for a small fraction of the motor's original cost. The stepper motors are easy to extract from the drives, and are ideal for many applications. This arrangement was used in the scale model of a RADAR set to control the position of a miniature parabolic antenna. (Note that some 5 1/4" floppy disk drives used a four-wire "bipolar" motor, which is not compatible with this circuit.)
[ file in RAR format ] - download WinRAR
Category: RC Modeling
Source: Art's Theremin Page
| ECHO TONE OSCILLATOR. This simple circuit amplitude-modulates a single tone in such a manner to approximate the echo effect one might obtain, for instance, with sonar apparatus. Any reader who has been on a sonar-equipped vessel will realize that some imagination is required to appreciate the similarities among this simple scheme and the "real thing." However, this circuit might adjunct a small model (of a submarine, perhaps) to add the dimension of sound.
[ file in RAR format ] - download WinRAR
Category: Oscillators
Source: Art's Theremin Page
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