Converter Circuits

Voltage to Pulse Circuits

Current to Voltage Circuits

Frequency to Voltage Circuits

RF Converter Circuits

Sine to Square Wave Circuits

Voltage to Current Circuits

Voltage to Frequency Circuits

Period to Voltage Circuits

Only two external capacitors can work polarity power conversion ICL7660

Consisting of two capacitors polarity as shown by ICL7660 and external power conversion. The power supply using a dedicated integrated circuit ICL7660 polarity inversion and ex .
Light to Frequency Converter TSL220

A large area photodiode and current to frequency converter combined in a clear plastic 8-pin DIL package. The output is a pulse train whose frequency is directly proportional to the light intensity. The output is CMOS compatible (use a 3k3 pulldown resistor to drive LS TTL) and the frequency can be measured by pulse counting, period timing or...
Voltage-to-current converters

A simple voltage-to-current converter is shown in the figure. The current out is 0t or Vjn/R. For negative currents, a pnp can be used and, for better accuracy, a Darlington pah-can be substituted for the transistor. With careful design, this circuit can be used to control currents of many amps. .
Triangle-to-sine converters

Conversion of triangle wave shapes to sinusoids is usually accomplished by diode-resistor shaping networks, which accurately reconstruct the sine wave segment by segment. Two simpler and less costly methods may be used to shape the triangle waveform of the 566 into a sinusoid with less than 2% distortion. The non-linear IDSVDS transfer... .
Square wave-to-triangle converter

This fixed frequency triangular waveform generator driven by a TTL square wave generates typically 16-V p-p triangles at frequencies up to several MHz. It uses only one AND open collector gate, or one open collector inverter as a fast integrator with gain. Careful successive adjustments of R and PI are needed. When correct adjustments are... .
Voltage-to-current converter

The current out is Iqutâ€”Vin/R. For negative currents, a PNP can be used and, for better accuracy,-a Darlington pair can be substituted for the transistor. With careful design, this circuit can be used to control currents of many amps .
Multiplexed bcd-to-parallel bcd converter

Converter consists of four quad bistable latches activated in the proper sequence by the digit strobe output of the LD110. The complemented outputs (Q) of the quad latch set reflects the state of the bit outputs when the digit strobe goes high. .
DC-10Khz frequency-voltage converter

The converter generates an output voltage which is linearly proportional to the input frequency waveform. Each zero crossing at the comparator"s input causes a precise amount of change to be dispensed into the op amp"s summing junction. This charge in turn flows through the feedback resistor generating voltage pulses at the output of the op amp .
Frequency-to-volt age converter

This circuit converts frequency to voltage by taking the average dc value of the pulses from the 74121 monostable multivibrator. The one shot is triggered by the positive-going ac signal at the input of the 529 comparator. The amplifier acts as a dc filter, and also provides zeroing. The accuracy is 2% over a 5 decade range .
Voltage-to-frequency converter

The D169 serves as a level detector and provides complementary outputs. The op amp is used to integrate the input signal Vin with a time constant of R1C1. The input (must be negative) causes a positive ramp at the output of the integrator which is summed with a negative zener voltage. When the ramp is positive enough D169 outputs change state... .
Voltage-ratio-to-frequency-converter

The circuit accepts two positive-voltage inputs VN and Vv and provides a TTL-compatible output pulse train whose repetition mte is proportional to the ratio VN/ V0. Full-scale output frequency is about 100 Hz, and linearity error is below 0.5 percent. The outputF, equals KVn/Vd, where K = 1/(4R2C1) provided R1 = R3. Op amp IC1A alternately... .
SquareÂ·-to-sine-wave-converter

Two pairs of MOSFETs form a bridge that alternately switches current in opposite directions. Two parallel-resonant LC circuits complete the converter. The Ll/C1 combination is resonant at the fundamental frequency; the L2/C2 combination is resonant at the clock frequency"s third harmonic and acts as a trap. Tl and C3 ensure that both halves... .
Zero-error-converter

Single programming resistor Rp provides an output-current range of about six decades.-Note that this resistor"s TC is also a potential source of error; it dissipates 125 mW when JliN ~ 5 V. The maximum deviation is typically 50 nA or 0.0002% of full scale. .
Pulse-train-to-sinusoid-converter

The circuit letsyou convert a serial pulse stream or sinusoidal input to a sinusoidal output at 1/32 the frequency. By varying the frequency of Vrn, you can achieve an output range ofl07:1-from about 100 kH2 to less than 0.01 H2. The output resembles that of a 5-bit d/a converter operating on paralleLdigital data. Counter IC1 generates binary... .
Frequency-to-voltage-converter

Six components can configure a circuit whose output voltage is proportional to its input frequency. The average current (hvc from the 40106 Schmitt trigger inverter"s ground pin 8 is linearly dependent on the frequency at which CO is discharged into the op amp"s summing junction. .
Voltage-to-requency-converter

Circuit has a 1 Hz-to-30 MHz output, 150-dB dynamic range, for a 0 to 5 V input. It maintains 0.08% linearity over its entire 71/3 decade range with a full-scale drift of about 20 ppm/Â°C. To get the additional bandwidth, the fast )FET buffer drives the Schottky TTL Schmitt trigger. The Schottky diode prevents the Schmitt trigger from ever... .
Voltage-to-frequency-converter

The input voltage, V1, causes C1 to charge and produce a ramp voltage at the output of the 741 op amp. Diodes D1 and D2 are four-layer devices. When the voltage across C1 reaches the breakover voltage of either diode, the diode conducts to discharge C1 rapidly and the op amp output goes abruptly to zero. This rapid discharge action applies a... .
Voltage-to-frequency-converter

This circuit can accept positive or negative or differential control voltages. The output frequency is zero when the control voltage is zero. The 741 op amp forms a current source controlled by the voltage Ec to charge the timing capacitor C1linearly. NE555 is connected in the astable mode. so that the capacitor charges and discharges between... .
1Mhz-voltage-to-frequency-converter

This stabilized voltage-to-frequency converter features 1 Hz -1.25 MHz operation, 0.05% linearity, and a temperature coefficient of typically 20 ppm/Â°C. This circuit runs from a single 5-V supply. The converter uses a charge feedback scheme to allow the LTC1052 to close a loop around the entire circuit, instead of simply controlling the... .
Current Loop

This 5-V circuit utilizes a servo-controlled dc/dc converter to generate the compliance voltage necessary for loop- .
Power-Saving Intermittent Converter

This circuit switches its dc/dc converter, IC1, off whenever the large filter capacitor, C6, has suffic .
Current-To-Frequency Converter

Teledyne Semiconductor"s Type TSC9402 IC is eminently suitable as an inexpensive current-to-frequency conver .
Period-To-Voltage Converter

The input signal drives ICD. Because ICD"s positive input (V+) is slightly offset to + 0.1 V, its steady state .
Programmable Frequency Divider

This divider uses a variable-length shift register, a type-D flip-flop, and an inverter. The clock feeds the .
1Ghz Divide-By-N Counter

Counter speeds for CMOS- and TTL-programmable counters are limited to under 100 MHz. ECL-type devices can approach .
Frequency/Voltage Converter

Teledyne Semiconductor"s Type TSC9402 is a versatile IC. Not only can it convert voltage into frequency, but al .
Potentiometer-Position V/F Converter

In this application, an AD652IC is used in a synchronized V/F converter that derives its input from th .
Radio Beacon Converter

The radio beacon band extends from 280 to 516 kHz. Each beacon has its own characteristic AM"-modulated morse-coded .
Low-Noise 420Mhz Atv Receiver/Converter

Ll, Ql, L2, and L3 compose an RF amplifier stage that feeds Ml, a doubly balanced mixer. Q4 is a l .
Vlf Converter

The VLF Converter can be used to pick up signals for the general coverage of shortwave receivers. A number of unusual signals .
2Meter Converter

This converter enables a receiver that tunes 28 to 32 MHz to receive the 144- to 148-MHz amateur band. A BF981 dual-gate .
Receiver Frequency-Converter Stage

In this case, the NE602 is used in this superhet front-end configuration. Ul serves as a frequency conve .

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