Showing posts with label precision. Show all posts
Showing posts with label precision. Show all posts
Sunday, November 2, 2014
PRECISION POWER REGULATOR ELECTRONIC DIAGRAM
PRECISION POWER REGULATOR ELECTRONIC DIAGRAM
A precision voltage source is quite easy, except when the voltage should be consistent over wide range of ambient temperature. This requirement might be needed in high precision measurement system environment. For example, to provide reference voltage in analog to digital conversion.
Sunday, September 7, 2014
Build a Precision Increasing Buffer Wiring diagram Schematic
How to Build a Precision Increasing Buffer Circuit Diagram? This simple Precise Buffer Overflow Detection via Model Checking. increasing number of attacks that exploit such vulnerabilities. Precision Increasing Buffer Circuit Diagram adding an unity-gain buffer to your analog schema can increase its precision. For example, by itself, the op amp IC1 exhibits a maximum dVosldT of 1.8 /iV7°C and can drive a 600- load. Under these conditions, IC1 would dissipate 94 mW incrementally.
Precision Increasing Buffer Circuit Diagram
Thus, the op amp`s 0JA of 150°C/PFr would change its vqs by 25 juY. The buffer, IC2, will isolate IC1 from the load and eliminate the change in power dissipation in IC1, thereby achieving ICl`s minimum, rated offset-voltage drive. The loop gain of IC1 essentially eliminates the offset of the buffer. Almost any unity-gain buffer will work, provided that it exhibits a 3-dB bandwidth that is at least 5 times the gain-bandwidth product of the op amp.
Friday, August 15, 2014
Precision Audio Milli volt meter Circuits Wiring diagram
This electronic schema is audio milivolt meter. It measures 10mV to 50Volt RMS in eight ranges.
Precision Audio Millivoltmeter Circuits Diagram
Notes:
Precision Audio Millivoltmeter Circuits Diagram
Notes:
- Connect J2 and J3 to an Avo-meter set to 50µA range:
- Switching SW2 the four input ranges will be multiplied by 5
- Total fsd ranges are: 10mV, 50mV, 100mV, 500mV, 1V, 5V, 10V, 50V
- Set R11 to read 1V in the 1V range, with a sine wave input of 1V @ 1KHz
- Compare the reading with that of another known precision Millivoltmeter or with an oscilloscope.
- The oscilloscope reading must be a sinewave of 2.828V peak to peak amplitude
- Frequency response is flat in the 20Hz-20KHz range
- If you have difficulties in finding resistor values for R1, R2, R3 & R4, you can use the following trick:
R1 = 10M + 1M in parallel
R2 = 1M + 100K in parallel
R3 = 100K + 10K in parallel
R4 = 1K2 + 6K8 in parallel
All resistors 1/4W 1% tolerance
Parts:
R1_____909K 1/2W 1% Metal Oxide ResistorR2______90K9 1/2W 1% Metal Oxide ResistorR3_______9K09 1/2W 1% Metal Oxide ResistorR4_______1K01 1/2W 1% Metal Oxide ResistorR5_____100K 1/4W ResistorR6_______2M2 1/4W ResistorR7______82K 1/4W ResistorR8______12K 1/4W ResistorR9_______1K2 1/4W ResistorR10______3K3 1/4W ResistorR11____200R 1/2W Trimmer Cermet
C1_____330nF 63V Polyester CapacitorC2,C3__100µF 25V Electrolytic Capacitor
C4_____220µF 25V Electrolytic CapacitorC5______33pF 63V Polystyrene CapacitorC6_______2µ2 63V Electrolytic CapacitorD1-D4___1N4148 75V 150mA Diodes IC1_____CA3140 Op-amp
IC2_____CA3130 Op-amp
SW1_____2 poles 5 ways rotary switch
SW2_____SPDT switch
J1______RCA audio input socket
J2,J3___4mm. output socketsB1______9V PP3 Battery
Clip for PP3 Battery
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