is anyone could check this cicuit....

[drinalds]

hi guys...can you help me on this circuit...i appreciate your kindness..tnx..and GOD BLESS...

https://www.electro-tech-online.com/custompdfs/2007/07/LB-45.pdf

 

[xxxxxxxxxxxxxx]

would be happy to, but what do u need help with? im guessing u want to build a freq to voltage (as in pdf link) and then take that and put it to a analog to digital display driving converter ? that would basicly make a frequency 'counter'. you will need to add more details so we can help you. thx

 

[drinalds]

hi...

would it be possible that this circuit can run any DC component ang can charge a rechargeable batteries?...if so how?

 

[xxxxxxxxxxxxxx]

I really cannot see how. I may be wrong, but it appears that you have just found this and dont really know what it is for or what it is. I suggest, if you are searching for a battery charger, search google for it. if it was sometine else you need, please advise.

 

[RadioRon]

would it be possible that this circuit can run any DC component ang can charge a rechargeable batteries?...if so how?

As Mike11298 says, this circuit is not capable of providing the power that is needed for you. This circuit is for signals, not power.

 

[drinalds]

hi...

can you give me some advise...what can you suggest for research proposal...
related to the field of electronics and communication...do you have any wild idea how can i convert frequency to voltage, just like an ordinary power supply...tnx...GOD BLESS...

 

[ericgibbs]

can you give me some advise...what can you suggest for research proposal...
related to the field of electronics and communication...do you have any wild idea how can i convert frequency to voltage, just like an ordinary power supply...tnx...GOD BLESS...

1. Do you want to convert 'signal' level frequencies to dc ?
Or
2. Do you want to convert a 'mains' type alternating voltage to dc, suitable
for powering other devices?
Or
3. Do you want to make a battery charger?

If its #1, then tell us the frequency of the signal and the amplitude of the signal and what dc voltage you require from the freq to voltage conversion.

If its #2, tell us what the mains supply voltage and frequency and the dc voltage and current you require in order to power the other device.

If its #3, what is the battery voltage and the Ahr capacity and the type of battery. eg NiCd, Li Nh etc....

We need more details of what you are trying to do.

 

[audioguru]

do you have any wild idea how can i convert frequency to voltage, just like an ordinary power supply?

An ordinary power supply does not convert frequency to voltage.
It converts a high AC voltage from the mains to a lower DC voltage. The AC mains frequency is constant.

 

[drinalds]

how do i convert "signal" level frequency to DC voltage...

 

[audioguru]

how do i convert "signal" level frequency to DC voltage?

A signal has very low current. A passive or active rectifier converts the signal to low current DC pulses then a filter capacitor smooths the pulses into a low current DC signal.

 

[drinalds]

so..it is possible that i can give dc voltage supply in a 6V device...try to see this circuit...**broken link removed** this type of circuit is enough to give a dc voltage supply?...

 

[audioguru]

An LM2907 is a tachometer. Its output voltage depends on the input frequency. The voltage is low with a low frequency and is higher with a high frequency.
It is not a power supply. It has a max allowed output current of only 50mA.

 

[drinalds]

so what application is applicable in this circuit...do you have any idea?...

 

[audioguru]

so what application is applicable in this circuit...do you have any idea?...

The datasheet shows many applications for an LM2907 as a tachometer or as an engine over-speed alarm.

The datasheet for the LM331 also shows many applications for it.

I get datasheets from www.datasheetarchive.com .

 

[drinalds]

i have another question...regarding not to the previous topic u have discuss...is it possible that radio freqeuncy or microwave can convert to DC power?...how is it true...

 

[audioguru]

If you have a tuned antenna beside the transmitting antenna of a powerful radio station then you can rectify the signal into low power DC.