Application of v to f converter

The F to V converter circuit requires a power supply circuit. For the below circuit. This circuit uses a 12V DC supply for powering the owl circuit In the power supply circuit diagram the D4 and D3 bridges can be made using diodes 1N, and 1A bridge rectifier modules also exist in the market. The Frequency to voltage converter circuit diagram is shown belo. These circuits are used in many applications like tachometers, digital frequency meters, etc. Capacitor C2 and Resistor R4 afford the required timing for the circuit.

There are many features of using an LM timer in this circuit. Because, we can directly replace the SE or NE This IC operates in both astable and monostable modes. It has an adjustable duty cycle and the temperature stability is better than 0. We use two converters and we get V1 and V2 as two separate outputs. An op amp is connected which adds both the voltages V1 and the inverted —V2 voltage. This sum will be proportional to the actual frequency difference between F1 and F2.

Hence we get the frequency difference measurement in terms of frequency as well as in terms of voltages. The diagram below shows the circuit of f requency difference measurement.

Enter your email address to subscribe to this blog and receive notifications of new posts by email. Email Address. I enjoyed reading the content of it. I was amazed by it. Keep it up. Love to see more post from you.

Thank you for sharing. I have one question…. The question above by Kamra refrs to the first schematic. Hi Mr. Notify me of follow-up comments by email. Notify me of new posts by email.

Table of Contents. Subscribe to Blog via Email Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Can it be arranged for an input frequency of 30KHz and an out put voltage of 30 or more VDc? Hi sir, please explain about pin number 8 in the picture of the first circuit. Thank you Reply. Thank you in advance. R5 and C4 determine the pulse width multiply these to values together in farads and ohms and you will get the time constant in seconds i.

R5 and C4 lead to nowhere and can be omitted. C1 and R1 define the fixed pulse width, but only for square wave signal with constant amplitude. R2 and R3 can be neglected while R1 is much smaller than R2 and R3. Otherwise a paralel combination of R1, R2 and R3 with some influence of D1 and Q1 must be considered.

The IC1 act only as comparator with hysteresis. R6 and C5 are that additional circuitry which was mentioned in the circuit description, but work only when R6 C5 time constant is longer than period of the input signal. This circuit is to decode contents of a modulated FM signal. This requires energy to do the job. Instead use the telephone line voltage to charge the battery. HI, i am refering this circuit for my project charging battery using FM radio can I give FM frequency range to this circuits.

This circuit looks like it could work for my project: speed-sensitive dimming for my LED bicycle lights. A few questions:.