Homemade Frequency Counter (ICM7225 based)

[ecestud]

hmmmmm. maganda xa... pewde ko bang gawin proposal ito?? kung pwede lang..

[webscatter]

hmmmmm. maganda xa... pewde ko bang gawin proposal ito?? kung pwede lang..

There is no such "homemade"...change the proposed title

[ecestud]

pwede ko ba itoh. e propose na project?? para sa project proposal namin??

[webscatter]

pwede ko ba itoh. e propose na project?? para sa project proposal namin??

circuit ito...u must have apps assign from freq counter...maybe for other related apps or integrate it to become a system

[uranium235]

magandang isama sa frequency counter ung fucntion generator  

[julzbond09]

kuya tinest ko po ung circuit nyu kaso ayaw gumana..d q po alam qng bkit pero ginaya ko lang as in ung drawing..bka po pde phelp..di ko po kc magetz ung logic nung circuit..thankz po..

[insomartin]

kuya tinest ko po ung circuit nyu kaso ayaw gumana..d q po alam qng bkit pero ginaya ko lang as in ung drawing..bka po pde phelp..di ko po kc magetz ung logic nung circuit..thankz po..

gawa ka muna nang schematic diagram mo mismo. block diagram yung drawing eh...

[julzbond09]

hindi ko din po kc mgetz ung logic nung block diagram kya nahihirapan po me..i min kung paano po macocount ung frequency gamit ung block diagram

[julzbond09]

and ung schematic nga po pla nung tinest ko ay nkabase lng dun s block diagram...as in kagag po.. tpos ung JK ay kinonek ko sa +5V..
sa analysis po kasi na ginawa ko...nakita q na the counter will work when store is connected to the ground, reset is supplied/floating and when count is nkclock. Pero panu po ba mcacatch ung dapat na exact reading nung frequency? mag change po ba ung state ng store the time na mreach nung count ung measured frequency? how will the input/measured frequency affect the circuit/output of the circuit? senxa na po..mahina po ako pag dating sa frequencies e.. looking forward for replies.. thanks in advance 

[nucleus]

naku lokohan ata to natesting na pala gamit yung block diagram?

yung mga sagot sa tanong mo sis ay nasa datasheet

[bravokilo]

take a look at freq counters parang testers sa deeco for P2,200. kumpleto na. walang ng trip to alexasn,casing, switches etc...mura lang gawa na.

[julzbond09]

naku lokohan ata to natesting na pala gamit yung block diagram?

yung mga sagot sa tanong mo sis ay nasa datasheet

tiningnan ko na ung mga datasheets ng bawat components kaso hindi nya po aq natulungan maintindihan ung logic nung block diagram

[julzbond09]

  ngayon ko lang po napansin...continuous po kc ung count nya kya i thought mali ung output..but nung sinukat q ung frequency input q then sa first reading from 0...tama naman cya  un nga lang nag add ung frequency imbis na dapat titigil na cya dun..i think ind lng ng fufunction ng ayos ung sa reset and store q..tingnan ko nlng kung anu magagawa ko para maayos.. thankz po sa block diagram ~ 

[MonDU1FV]

I wish there are kits available for the home constructor. I assembled these more than a decade ago from a kit packed in japan.





Homebrewing or assembling gear is a rewarding activity. yes you can buy ready made stuff, but where is the fun with that?  Heathkit was and is an education company and a primary objective in kit making is education.

I was planning on modifying this old project by breaking out the internal jumper between the prescaler and the counter board. that way, i can use it for the lower frequencies with better performance. An external bnc to bnc jumper will allow me to use it again for vhf/uhf measurements. So since i had it opened up , kinunan ko na rin ng litrato, kataon nabasa ko itong thread na ito kaya pinost ko na rin for reference. hihi.

[nucleus]

I wish there are kits available for the home constructor. I assembled these more than a decade ago from a kit packed in japan.





Homebrewing or assembling gear is a rewarding activity. yes you can buy ready made stuff, but where is the fun with that?  Heathkit was and is an education company and a primary objective in kit making is education.

I was planning on modifying this old project by breaking out the internal jumper between the prescaler and the counter board. that way, i can use it for the lower frequencies with better performance. An external bnc to bnc jumper will allow me to use it again for vhf/uhf measurements. So since i had it opened up , kinunan ko na rin ng litrato, kataon nabasa ko itong thread na ito kaya pinost ko na rin for reference. hihi.

repost ko lang: