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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 (

Hello,In the circuit below I have Vc>Vb. I need some how to make Vb larger then Vc. I there a method using R1 R2 and R3 which could swith the Vbc junction state? Given the circuit how can I make the

After trying various battery powered ones (using 2xAA cells) I found one on eBay that uses a single 18650 rechargeable cell that is fine enough for my needs. I found that 2xAA rechargeable cells were

An informative review can be found at https://www.tomshardware.com/reviews/pinecil-v2 Looks very impressive.

OK please consider I'm 73 and dislike any computer smaller then an HP netbook, and that includes my never to be damned enough Moto e6 'smart phone.' The specs mention a CPU, so does this iron have an

For small work, my rig is a Pinecil running off a Dewalt battery & usb-c adapter which has a belt clip. https://pine64.com/product/pinecil-smart-mini-portable-soldering-iron/ -- Mike

Oh critical warning, do not use these in an explosive atmosphere or around flammables like gasoline or alcohol! It's easy to forget there is a tiny fire inside. I almost set a car on fire with mine.