Free Simple Circuit Diagram
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 and the monostable multivibrator (on shot multivibrator) which can serve as a pulse source. The NAND gate inverters configuration shown […]
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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 can turn a knob of variable capacitor mechanically, microcontroller system prefer outputting a voltage rather than controlling a variable capacitor […]
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This is a one transistor pump circuit. This is a very simple circuit and very helpful, you can use it as a building block for designing more complex electronic circuit. This circuit generates voltage staircase from a square wave input. Here is the circuit: The V1 is determined by following equation: V1 = Vo – Vbe(sat) If the input voltage […]
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This is a grid dip oscillator (GDO) circuit developed by Luigi Falcone. This circuit uses seven plug in coils covering 3.0 to 30Mhz. This circuit can be connected to the a frequency meter by using The coaxial socket J2. The figure below shows the schematic diagram of the circuit and the coil information: DC amplifier is formed by TR2 that […]
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