Category Archives: Control Electronics

Power-On-Reset Generator

Posted on November 25, 2010 by Rust

After supply turn-on, another power related requirement involves generating a system reset pulse. The 5V rail comes up when supply power is applied to figure below. The LT1004 clamps at 1.2V and C1A’s positive input (Trace B) ramps at a … Continue reading →

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Astable and Monostable Multivibrators

Posted on November 25, 2010 by Rust

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

Posted on November 25, 2010 by Rust

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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