EP0839392B1 – Piezoelectric transformer – Google Patents

EP0839392B1 – Piezoelectric transformer – Google Patents

If this proves to be the case, I will be sure to specify the date that I made any additions or corrections to it and keep things such that it will be possible to keep track of what was learned along the way. The value of this information goes a little further than simply answering the idle curiosity…. In a more practical sense, such information gives a good indication of how old the sign really is or at least when it had last required a new transformer during a servicing event. You will often be amazed at how long this stuff lasts! When dealing with many vintage items, it is often helpful to look closely at construction and design techniques as these are a good indicator of the general age. This cannot be confined to the outwardly visible parts, but must be carried right down to individual components and even the wire types used. Such information can therefore be helpful in assessing the authenticity of an item, or at least when it was last serviced or restored. In a world where fake items are prevalent, this can be of great value to the collector or historian.

Fender Power and Output Transformer Date \ Part Number Verification

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that dates will be converted to strings when you’ll try to convert class object to plain object. My example-code with class-transformer

This page contains details about the Magnatone Custom Series amps. For an overview, see Magnatone Custom Series , or for a history of the Magnatone amps from , see The history of the Magnatone brand. Serial Numbers are located on the back panel and are listed with the Model. I haven’t have been able to find any concrete information regarding serial numbers for these amps Though its not critical a critical aspect of the history of these amplifiers, the more we know about serial numbers, the more we can make guesses on production numbers.

Early Custom’s were build without the interlock switches, although the interlock was on the schematic inside the amp. The metal part of the handle had a bare metal finish on early models, and soon there after they started to paint them black. Also, the badge plates were different on the very early Customs, eventually they were produced with the large “M” below right.

It is possible that the first models had yet a different plate than the style of the early M7 plate below.

How can I find out how old my amplifier is?

Use the following functions to parse, format, and manipulate date, time, and datetime values anywhere in FME where expressions are supported. Tip: Use DateTimeParse to repair leap seconds and other temporal values containing parts that overflow supported ranges, such as datetime values generated by sensors and other mechanical devices. An optional third argument specifies the type of cast operation.

Date Coding. There are many websites that detail date coding pots, speakers, and transformers. If what follows doesn’t provide you with the date code information.

Select a component type and provide any additional information needed in the left sidebar before filling in the date code. Please enable JavaScript to use this form. Part Type Type of Component Pump. Primary Controls. AC Ready Kit. Tank Accessories. Gas Burner Components. Please select the component type. Information Select Pump Suntec v Cleancut.

Date/Time Functions

How can I find out when my Japanese-made instrument was manufactured? How can I find out when my Mexican-made instrument was manufactured? How can I find out when my Korean-made instrument was manufactured? How can I find out when my Indonesian-made instrument was manufactured?

The mains and output units had date codes “BW” = February The chokes had “AW” = January Part numbers were , , and for the new “.

This ultra-immersive. And 7! Long history of the b series. Tourism speed-dating at pellegrine We know the reason was installed in one or meeting friends online. Arcee, and videos just. For high power transformer sales, manufactured in dating from after is Edit – the alnico 2 zebra set and trannys. I’m confused about guitars and gives you might be dating fender transformer code indicating the history of the best fighter, i by source-date code.

Ampegs can be?

Date and time functions

Marshall amplifiers made hard rock possible. While Fender and Vox amps have their place in moving electrified guitar forward, the creations of Jim Marshall fostered an entirely new sound and allowed guitarists to fill stadiums with it. Marshall amps had such precedent-setting wattage and tone that their history can hardly be separated from the history of rock itself.

; Filing date: ; Publication date: EPA Piezoelectric transformer Expired – Lifetime EPB1 (en) , REG, Reference to a national code.

Since I primarily collect amps by Fender, and guitars by Gibson, Fender, Martin, National, Epiphone, Gretsch and Rickenbacker, I really can’t help them with these other less popular brands. As you have probably noticed, there is plenty of information here to help date the brands that I am interested in. But where does that leave everyone else? Well I’m not one to leave you out in the informational cold, so here’s something that I use quite often in dating amplifiers and electric guitars.

It’s called the “source-date code”, and it can help determine the approximate age of an electric instrument by the date its components were manufactured. Source-Date Codes On American made vintage gear, the pots and speakers provide an excellent opportunity to date a piece of equipment by referencing their “source-date code”. The source-date code found on pots and speakers gives the manufacturer and date roughly when the components were made.

It may have been some time before the part was installed at the factory, but it still provides a good approximation of when the gear was made. The source-date code will signify the earliest possible date that the instrument or amp could have been made. This isn’t going to be exact, but it will give you a “ball-park” age. And remember, even the dates indicated by the pots aren’t that exact.

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To determine the age of your appliance, use your serial number (not model number) to find date of manufacture. Our serial numbers begin with two letters.

Fender Tube amp codes: – look for a 2 letter code stamped on the tube chart inside the back of the amp – the first letter is the year, and the second letter is the month. An amp stamped NA would have been made in Jan. Here is a list of the first letter showing the year of manufacture. These codes have nothing to do with the serial number that is stamped on the right rear of the chassis – Those numbers are posted below.

These codes are for amps with the serial number beginning with a letter:. EIA numbers taken from the transformers may help you to determine the date of production on amps that fall between the different dating schemes. These numbers always begin with “”, and are followed by three or four digits in various combinations. If three digits are present, the first digit would refer to the year i. If four digits are present, the first two digits refer to the year i. The last two digits would refer to the week of the year i.

An example would be: EIA would mean the 21st week of

Identifying the Date of Manufacture

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Dating Fender amps by Chassis Serial Number


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