Category Archives: Control Electronics

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MAX1703 Single-Cell Boost Converter Circuit

When you design a circuit with only a single-cell battery, you will need boost-converter to provide enough voltage for most ...

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55MHz Scope Sensitivity Amplifier

Scope sensitivity amplifier is a vital front-end signal processing for every scope instruments. The function of this circuitry is simple: ...

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Two-Band Bxandall Active Tone Control

Using active circuit for tone control means that we can provide cut and boost, maintaining overall amplifying factor of original ...

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Pulse Width (PWM) Controller Circuit

A LM3900 quad operational amplifier can be used to build a pulse width (PWM) controller. The LM3900 was chosen because ...

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Small TV Modulator Using A Motorola MC1374

How can television modulator be small and simple like this? First, it uses integrated circuit, and the second, any TV ...

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Astable and Monostable Multivibrators

Multivibrators is two state devices which is used extensively in digital electronics. The bistable multivibrators or called filp-flop are the basic memory devices used in sequential logic. Beside bistable multivibrator, there are also astable multivibrator which serves as an oscillator … Continue reading

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Varactor – The Core of Voltage Controlled LC Tuner

In hybrid system, analog system with digital control, a voltage controlled things is very important since it can be interfaced by DAC from digital system. For radio tuning with digital control, a voltage controlled LC circuit is needed. If we … Continue reading

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Shaded-Pole AC Induction Motor

A shaded-pole AC induction motor is one of type of AC induction motor that does not have start winding but has only one main winding. This type usually called “disposable motors because it better replace than repair. Besides cheap, the … Continue reading

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Capacitor Start/Capacitor Run Induction Motor

An induction motor is one of type of AC motor that is supplied by means of electromagnetic induction. This motor has some advantages like has high efficiency and can be used for lower full-load currents. However, this motor is expensive … Continue reading

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