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Full-featured Dual H-bridge – Circuit Schematic
Full-featured Dual H-bridge
This is a slightly revised version of the 6-transistor H-bridge designed by Mark Tilden and found on the BEAM Tek website (now only available via archive). I...
The "BEAM Stepper" drive circuit – Circuit Schematic
The "BEAM Stepper" drive circuit
The 74AC240 stepper driver works by alternately enabling each half of the buffer. Only one half can be enabled at a time. Let`s assume that the top half of ...
The "BEAM Stepper" drive circuit – Circuit Schematic
The "BEAM Stepper" drive circuit
The 74AC240 stepper driver works by alternately enabling each half of the buffer. Only one half can be enabled at a time. Let`s assume that the top half of ...
Discrete component motor direction controller – Circuit Schematic
Discrete component motor direction controller
This circuit can control a small DC motor, like the one in a tape recorder. When both the points A & B are "HIGH" Q1 and Q2 are in saturation. Hence the bas...
Discrete component motor direction controller – Circuit Schematic
Discrete component motor direction controller
This circuit can control a small DC motor, like the one in a tape recorder. When both the points A & B are "HIGH" Q1 and Q2 are in saturation. Hence the bas...
DC Servomotor Controller – Circuit Schematic
DC Servomotor Controller
This is an experiment on the closed loop DC servomotor control system (SMC). It will able to be used for practical use with/without some modifications. The clos...
DC Servomotor Controller – Circuit Schematic
DC Servomotor Controller
This is an experiment on the closed loop DC servomotor control system (SMC). It will able to be used for practical use with/without some modifications. The clos...
DC Motor Control Circuit – Circuit Schematic
DC Motor Control Circuit
Here, S1 and S2 are normally open , push to close, press button switches. The diodes can be red or green and are there only to indicate direction. You may ne...
DC Motor Control Circuit – Circuit Schematic
DC Motor Control Circuit
Here, S1 and S2 are normally open , push to close, press button switches. The diodes can be red or green and are there only to indicate direction. You may ne...
DC Motor Reversing Circuit – Circuit Schematic
DC Motor Reversing Circuit
A DC motor reversing circuit using non latching push button switches. Relays control forward, stop and reverse action, and the motor cannot be switched from for...
DC Motor Reversing Circuit – Circuit Schematic
DC Motor Reversing Circuit
A DC motor reversing circuit using non latching push button switches. Relays control forward, stop and reverse action, and the motor cannot be switched from for...
PowerSmart Solar Speeder, V2 – Circuit Schematic
PowerSmart Solar Speeder, V2
This must be the most efficient bipolar transistor motor driver design for this application and I recommend it for the solar roller competitions. A 1381E is use...
PowerSmart Solar Speeder, V2 – Circuit Schematic
PowerSmart Solar Speeder, V2
This must be the most efficient bipolar transistor motor driver design for this application and I recommend it for the solar roller competitions. A 1381E is use...
Zener-based solar engine – Circuit Schematic
Zener-based solar engine
The capacitor charges until the PNP transistor (here shown as a 2N3906, but you could also use a BC327) receives base current through the Zener and turns on...
Zener-based solar engine – Circuit Schematic
Zener-based solar engine
The capacitor charges until the PNP transistor (here shown as a 2N3906, but you could also use a BC327) receives base current through the Zener and turns on...
Circuit measures currents in dc servo motor – Circuit Schematic
Circuit measures currents in dc servo motor
The simple circuit design in Figure 1 lets you measure all components of a current flowing in a dc servo motor. The rectified output of the circuit uses ground ...
Circuit measures currents in dc servo motor – Circuit Schematic
Circuit measures currents in dc servo motor
The simple circuit design in Figure 1 lets you measure all components of a current flowing in a dc servo motor. The rectified output of the circuit uses ground ...
The Zener-based solar engine – Circuit Schematic
The Zener-based solar engine
The capacitor charges until the PNP transistor (here shown as a 2N3906, but you could also use a BC327) receives base current through the Zener and turns on...
The Zener-based solar engine – Circuit Schematic
The Zener-based solar engine
The capacitor charges until the PNP transistor (here shown as a 2N3906, but you could also use a BC327) receives base current through the Zener and turns on...
Wilf Rigter`s reversing H-bridge – Circuit Schematic
Wilf Rigter`s reversing H-bridge
This H-bridge variant was one of the first in which the reversing circuitry is built into the driver, rather than (as is more-commonly done) into the control ci...