Circuit Bench

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Title
Offset Adjustment on an Amplifier with the LM139 (CB14245E) In the figure we have the way of adjusting the input offset in an amplifier with gain 100 using a comparator LM139. The circuit is from National Semiconductor's Linear Applications
Variable Capacitance Multiplier (CB14130E)
Integrator (CB14104E)
Nicad Charger (CB14020E)
Thermometer LM3911 (CB13939E)
Programmable Gain Amplifier (CB13915E)
Motor Control with Feedback Using Triac (CB13806E)
PLL Frequency Divider usintg the 555 (CB13732E)
Flame Alarm (CB13715E)
Broadband Buffer (CB13645E)
Temperature Controller with RTD (CB14377E)
Coaxial Cable Driver (CB14354E)
High Voltage Regulator (CB14323E)
Power supply 15 + 15 V x 1 A LM340-15 (CB14259E)
Low Frequency Mixer (CB14220E)
Gain 10 Amplifier with Drift Compensation (CB14067E)
Temperature Sensor Interface (CB14037E)
Standing Wave Ratio Meter (CB13999E)
Digital Phase Control - Digital Dimmer (CB13876E)
Voltage Gain Controlled Gain Operational (CB13663E)
Operational Tone Control (CB13610E)
Pulse Generator LM4250 (CB14178E)
High Impedance and Low Capacitance Buffer (CB14151E)
Fast Integrator (CB14105E)
Sampling and Holding LM108 (CB14085E)
36 to 100 kHz Oscillator (CB14053E)
Thermistor or NTC Thermometer (CB13940E)
Regulator Crowbar Protection (CB13916E)
5 to 5.5 MHz VFO (CB13862E)
500 to 500 kHz Wobbulator (CB13846E)

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