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SMPS oddities

Hi all, I've been studying SMPSs for a while out of personal interest, and I stumbled upon an old schematic for a discr...
0 comments posted 18yrs
posted by radioramailpalodalculo
0 comments posted 18yrs posted by radioramailpalodalculo

In awe of electricians

All my life I've tried to learn beyond the basics of electronics, and invariably I've hit the same wall. Meanwhile some...
20 comments posted 18yrs
posted by <nospam
20 comments posted 18yrs posted by <nospam

tapping enamel wire

I spent some time today reading the first installment of The Impoverished Radio Experimenter. The author describes how...
8 comments posted 18yrs
posted by ara
8 comments posted 18yrs posted by ara

slow dimmer

Looking for a nifty circuit to ramp up and down the brightness of an LED over a period of say 30 mins to an hour. The d...
3 comments posted 18yrs
posted by colin.watters
3 comments posted 18yrs posted by colin.watters

design serices

Offer services as below: Industrial design, Product design, Engineering design, Graphic design, Website design, PCB des...
0 comments posted 18yrs
posted by turnkeyservice
0 comments posted 18yrs posted by turnkeyservice

Driving an IBM POS 2X20 Pole Display

I have a few IBM POS pole displays. They are 2x20 and are fluorescent and the part number is 61P5766. They have a four...
2 comments posted 18yrs
posted by rwells118
2 comments posted 18yrs posted by rwells118

Having problem with onkyo 875 receiver

Powers up just fine but,no audio . I play my blu-ray through it and have a beautful picture but no sound. No sound with...
0 comments posted 18yrs
posted by ecastile
0 comments posted 18yrs posted by ecastile

Use of electron tubes today

Hi to all, I was wondering how important tube electronics are today in military equipment. In the 80's I often heard th...
3 comments posted 18yrs
posted by invalid
3 comments posted 18yrs posted by invalid

Issues with a stepper motor

Hello folks, I am facing some issues regarding a stepper motor drive. The stepper motor I have is a 20KG 12V DC L/R Ful...
1 comments posted 18yrs
posted by chaudhari.chetan
1 comments posted 18yrs posted by chaudhari.chetan

HAWK

Need service manual for Rural Radio Telephone Link ,,,, Type H A W K - Exicom International . 9A7KSJ
0 comments posted 18yrs
posted by juraj.slat
0 comments posted 18yrs posted by juraj.slat

dead oscilloscope

Went to power up the scope this morning and only the led power light came on. The screen was dead the scope is only 6mo...
1 comments posted 18yrs
posted by geoffken
1 comments posted 18yrs posted by geoffken