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Hm. We have a number of Ryobi tools and are fairly satisfied with them. I'll have to keep that in mind should the need arise. -- Member of the toughest, meanest, deadliest, most unrelenting --

In our case she does things the old fashioned way, and I've seen some of the results. Quite the seamstress! Her sister next door has one of those computerized sewing machines and has had lots of

I'm not 100% sure, but I think that I may have gone around with those folks before. They show a yellow, a gray, and a black one. Mine's red. I'd have to find it to be sure of the model number

A BJT is inherently a current-controlled and -controlling device. Ibe controls Ice, within the limits of the surrounding circuitry. I have no idea why you don't want to use current sources if you are

I’m in the UK. Those are available here, but not cheap… Nuno T. Sent: 03 April 2025 23:49 To: [email protected] Subject: Re: [electronics101] Battery powered soldering iron You

Hello,I prefer not to use current sources A you can see In the attached photos and simulationI this I got it to be in active mode? by tweaking the resistors . I made few equations for the BJT shown

You might check out a Ryobi item:? 18v 120w temp controlled pencil iron (400-900° settable with knob) useful for electronics, etc.? Uses Ryobi 18v standard batteries.? Uses 'standard'

In that case, you have to reduce the base drive. Separate bias and signals on the base would probably help. I would change the series V2 and V3 into one current source - the DC offset is the bias and

Or a car battery, quasi sine wave inverter.... I've done that. Unless it is a smart soldering iron, even a dumb square wave inverter will power it just fine. The quasi sine wave inverters powered my

My wife was taking a business management class that used DEC VT100 (or 101) dumb terminals and time shared an IBM "big metal" computer. Like your late lady, she pressed some key or combination and

Take a look at https://iso-tip.com/battery-repair-for-obsolete-irons

Hello Donald ,Veb supposed to be forward biased so emitter? needs to be less then base. I tried to increase R1 drastickly but it didnt work. could you help with mathematical way in my circuit to set

Seems a very good product. I'll consider it. Thanks Nuno T.

Unfortunately, a gas one is out of the question for a number of reasons. Has to be battery powered. Only alternative is an extension lead with several tens of meters… Nuno T. Sent: 03 April

Yes! I am not looking forward to ending up with something newer, though it's only a matter of time with one of our vehicles heading for 200K miles and showing some rust. The other one is

It does. But although they mention a $26 price in there, the links to buy one are at $40 or so. And what's with the default to conical tips in so many cases? I notice in that review that they

It does look tempting, but that 30 day warranty put me off... My late lady was like that. When working at a call center in the area, she hit some key or combination of keys on the terminal she

I have a Wahl Isotip 60, so called because it'll charge up in one hour. It needs a battery, and the battery is no longer available, so I can't use it. When it did work, it worked well, but it's

V2 is turning the Q1 on very hard, such that it is in saturation, and Vc (product of Ic and R3) is quite large. If you don't want Vc to be so large, you have to reduce the base drive (V2/R1) of Q1 or

Hi Nuno! I've been following Pine Hollow Auto Diagnostics ( https://www.youtube.com/@PineHollowAutoDiagnostics/featured ) on Youtube, where Ivan Temnykh is enamored of his TS-101 (