Free electronic circuit design and schematic diagram
This continuity tester not only show if a connection is continue or not, but also determine the range of its conductivity level. Here is the schematic diagram of the circuit: Finding wiring trouble is easier if we know the quality of the connection, and this continuity tester give rough estimation. Small transistors will be sufficient for this circuits since the […]
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Using this automatic probe, you can see measure both audio signal (AF) and radio signal (RF). If audio signal is being measured, the path of the signal is via C1. Audio signal can’t pass the C2 since the capacitance is very small and having very high impedance for audio frequency signal. If you measure high frequency (radio frequency, RF), now […]
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Another application of OP-AMP is differentiator. Differentiator circuit produce an output if the input is changing. The output can positive or negative, depends on the change of the input: whether it’s decreasing or increasing. This circuit is a bias stable. The current is produced by the rate of change of input voltage because the inverting input is grounded. Here is […]
Read moreBelow is video tutorial about how to assemble the crossover network for the TriTrix speaker system. The TriTrix speaker system uses a second order crossover. Second order mean thare are two part coil for each filter. To assemble this, we only need a glue gun, plan board, wire and the electrics components. To assemble it, we can use a plain […]
Read moreBelow is video tutorial about how to assemble the crossover on the Aviatrix speaker. The speaker system has couple different version that you can build. There are mass loaded transmission line and channel speaker or we can used it as surround speaker at home theater system. There are slight changes in the crossover based on how you going to use […]
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One of inverting amplifier application is for summing several electric signals. The output of this circuit produce the sums of the input voltages. We can use both positive or negative voltage for the inputs. The input resistors doesn’t have to be same values. The input can be expanded to several digits. Since the point X is a virtual ground, the […]
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The schematic diagram below shows a differential amplifier circuit. This circuit is used to get a common-mode rejection ratios. This circuit need a precise resistor matching to get common-mode rejection ratios because the current source uses matched resistor ratios. Here is the circuit: The gain of this circuit is determined by following equation: gain=R2/R1 The Vout is determined by following […]
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