Rongge

This is a Simple Analog-to-Digital Converter with LT1018. An analog-to-digital converter (abbreviated ADC, A/D or A to D) is a device that converts a continuous physical quantity (usually voltage) to a digital number that represents the quantity's amplitude.The converter has a 60-ms conversion consumes 460 pA of 1's. 5 V power supply and maintains an accuracy of 10 bits on a 15 ° C in the temperature range of 35 ° C.   Simple Analog-to-Digital Converter with LT1018 Circuit Diagram A pulse applied to convert the command line causes Q3, operating in reverse mode, the discharge path through the diode 10 kO, forcing its collector low. Q3 results of reverse mode switching in a capacitor discharge to 1 mV of ground. During the time of the ramp value is less than the input voltage, output of the CIA is low.  This allows pulses ClB stabilized quartz oscillator, modulating Q4. The output data appears at the collector of Q4. When the ramp crosses the starting value of the output ...

This Precision Amplifier With Digital Control circuit diagram is similar to the preceding circuit of the attenuator. Gain of up to 100 can be achieved in this configuration, which is useful for signal conditioning of low output of transducers in millivolt range. The gain selection resistors R3 to R6 can be selected by the user and can be anywhere from 1 kilo-ohm to 1 meg-ohm. Trimpots can be used for obtaining any value of gain required by the user. The resistor values shown in the circuit are for decade gains suitable for an autoranging DPM. Resistor R1 and capacitor C1 reduce ripple in the input and also snub transients. Zeners Z1 and Z2 limit the input to ±4.7V, while the input current is limited by resistor R1. Capacitors C2 and C3 are the power supply decoupling capacitors. . Precision Amplifier With Digital Control Circuit Diagram Precision Amplifier With Digital Control Circuit Diagram Op-amp IC1 is used to increase the input impedance so that very low inputs are not loaded on ...

Description It is always necessary for engineers and technicians to test AC/DC mains voltages and continuity for any given circuit during breakdowns, the above mentioned circuit can be used as and sought of tester and can also check the continuity for you. all one has to do is that to touch the two probes at the required terminal of either live or an dead circuit The unique design of the tester allows the circuit to work in both AC and DC without any mode selector switch. When the probes A and B are short circuited voltage pin 1 goes a little below the threshold of the Schmitt trigger due to the voltage divider action of the resistor R1, R2 and VR1 This disables the gate of pin1 and due to this the transistor T2 goes into saturation while the transistor T1 is cut off therefore the green LED glows while the red segment goes off and the display will now glow as “C”   Circuit Diagram VR1 is a miniature preset which is to be calibrated before use its calibrations are fairy simple...

front * Map principles:   Activity:   If you want your house to be modern, mount it on lock!   I used it two years ago (perhaps twenty years still runs fine) There are many who intend to "crack" but without success. This is the principle of it vessels. When you have made in addition to the protection circuit howling whistle when pressing the wrong code, or does not allow detection code (to be introduced later) principle: CD IC 4017 is the output row count is 10, corresponding to the clock, then turn the output will be high.   we take advantage of this feature to give a high output back to input clock by hand coding phim.Khi new power circuit, IC is reset, output Q0 is high, this time if you press the number 2 the higher will be put into making the IC pin count clock to the output of Q2 is a high level, if you continue to press the number 0, then jump onto the high Q3 ... press the correct keys in turn will lead to Q6 high level to enable the circuit to unlock.  ...

12-Bit Digital-to-Analog Converter (DAC) with variable step size . The step size of the converter is variable by selection of the high order data bits. The first DAC, A, has a stable reference current supplied via the 10.24 V reference IC and Rl. R2 provides bias cancellation. As shown, only the first 4 MSB inputs are used, giving a step size of 225/256 2.048/16 = 0.127 mA.  This current supplies the reference for DAC whose step size is then 0.1275/256 = 0.498 µ. Complementary voltage outputs are available for unipolar output and using R3 - R4 = 10, Vout is ± 10.2 V approximately, with a step size (1 LSB) of approximately 5 mV. If desired an op amp can be added to the output to provide a low impedance output with bipolar output symmetrical about ground, if R5 = R6 within 0.05%. Digital 12-Bit dac Circuit Diagram   Note  That offset null is required, and all resistors except R2 and R3 should be 1% high stability types. By using lower order address lines than illustrat...