Free Simple Circuit Diagram
This a 0 to 360 shifter circuit. This circuit consist of two stage phase shifter which each of them provides 0 to 180 phase shift. This circuit uses the 2N3070 JFETs because the phase shift networks are not loaded by them. Here is the circuit : [Source: National Semiconductor Application Note]
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THE FM3954 monolithic-dual gives us an ideal low-offset and acts as low-drift buffer function for the LM101A op amp. Track over it’s bias current range thus improving common mode rejection is the excellent matching characteristics of the FM3954. Here’s the circuit diagram: [Source: National Semiconductor Application Note]
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This is a simple PWM modulator circuit. Comparing the message signal to a ramp or triangular waveform is the simplest way to produce a PWM signal. When the input is greater than the triangular waveform (the carrier), the resulting output is high, when the input is less than triangular waveform, the output is low. So, a comparator and triangular-waveform generator […]
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This is a circuit of low drift sample and hold. This circuit uses two JFET, Q1 and Q2 that provides the sample and hold capacitor, C1. Q1 provides a path, Rds(on), for C1 and turned on during sample. Q2 IGSS (<100 pA) and Q1 ID(OFF) (<50 pA) as the only discharge paths because Q1 is turned off, during hold. Here […]
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