Electronics Down Under

Crystal Acuracy

Hi, Im play with a PIC 16F627 and have it wired up with a 4MHz cystal with two 18pF Caps, my question is, do the caps a...

10 comments posted 20yrs

posted by none

10 comments posted 20yrs posted by none

Schematic for Compass Coin Magnum metal detector.

Greetings group. Can anyone please supply a copy of the schematic for a Compass brand "Coin Magnum" metal detector. Than...

0 comments posted 20yrs

posted by rg26ce1991

0 comments posted 20yrs posted by rg26ce1991

I am about to add an LED to a charger but need further opinions.

I am trying to add an LED to a NiMh charger for 5 AA battery pack (total voltage about 6.93) to be able to see that is...

7 comments posted 20yrs

posted by alitonto

7 comments posted 20yrs posted by alitonto

PC-17K1 optocoupler or equiv. wanted.

Greetings group. I have an AKAI ctv model CT-14X4A with a faulty optocoupler. I802 PC-17K1 I have been unable to find a...

3 comments posted 20yrs

posted by rg26ce1991

3 comments posted 20yrs posted by rg26ce1991

Repair tip - Teac CTF683 Rowa RTM686.

Greetings group. Teac CTF683 and Rowa RTM686 use the same chassis. The ROWA fault was no power. The remedy was to repla...

0 comments posted 20yrs

posted by rg26ce1991

0 comments posted 20yrs posted by rg26ce1991

Housing survey with a prize offer

homesite.com.au is running this housing survey with the HIA, offering a chance to win a $2,000 shopping spree at Mitre...

0 comments posted 20yrs

posted by rick_speciale

0 comments posted 20yrs posted by rick_speciale

Rain affecting signals and sensing rain.

Hi I am thinking of making a rain sensor to detect light rain as the BOM radar is often not accurate at measuring light...

29 comments posted 20yrs

posted by richardghole

29 comments posted 20yrs posted by richardghole

Project ideas?

Hi, I need some ideas about a home automation system! In two weeks time in need to submit a project proposal. I need to...

2 comments posted 20yrs

posted by clayton.curmi

2 comments posted 20yrs posted by clayton.curmi

Charging batteries inside an appliance.

Hi I have an interesting idea below which may help you or other people and I am wondering if you know anything about it...

2 comments posted 20yrs

posted by richardghole

2 comments posted 20yrs posted by richardghole

240v ac dissipation challenge, can I do better than 0.2W ?

Hi chaps, Had a small design challenge come up the other day:- Flash a red or green led 250ms on/250ms off from the 240...

12 comments posted 20yrs

posted by erazmus

12 comments posted 20yrs posted by erazmus

Charging batteries inside an appliance.

Hi I also have an interesting idea below which may help you or other people and I am wondering if you know anything abo...

1 comments posted 20yrs

posted by richardghole

1 comments posted 20yrs posted by richardghole

foot pedal design

Hey guys, I have this keypad with 12 functions (ie 12 micro switches). It needs to be hard wired with a cable length of...

6 comments posted 20yrs

posted by ne1

6 comments posted 20yrs posted by ne1

Bucket Brigade Chip(s) Needed For Webelo Projects

I need to acquire a couple of "bucket brigade" IC chips for my son's Webelo troop. They are in an endeavor to attain so...

6 comments posted 20yrs

posted by ag2217

6 comments posted 20yrs posted by ag2217

software for drawing schematics on a PC

I know there are many packages that design PCBoards and have all the bells and whistles, and I don't want to start one...

14 comments posted 20yrs

posted by nomail

14 comments posted 20yrs posted by nomail

OSD IC required

Hi, I am looking for a On Screen Display IC for 8-bit micro controller application that needs to create colour graphics...

8 comments posted 20yrs

posted by dhuisman

8 comments posted 20yrs posted by dhuisman