Guitar Amplifier Current Limiter 100 (GACL 100) / Dim Bulb Tester / Light Bulb Limiter

The Guitar Amplifier Current Limiter 100 (GACL 100) (aka Dim Bulb Tester or Light Bulb Limiter) was designed to be used to test guitar amplifiers for shorts, but it can also be used with other electronics.

It uses an incandescent light bulb to absorb excessive current caused by a short circuit to light brightly when there is one. This saves fuses and other parts from burning up, which can be costly or difficult to repair or replace (ex. transformers, special parts no longer made, etc.).  

It's a very handy and useful piece of test equipment to:

·         Safely test old guitar amplifiers

·         Test amplifiers that are blowing fuses

·         Safely turn on newly built amplifiers

·         Form filter capacitors

When a normal, properly working amplifier is plugged into the GACL 100 and turned on, the light bulb lights up brightly for a second and then gets dim. This is normal as there’s an initial current rush, which then settles down. If the amp has a short, you'll know it immediately as the light bulb stays brightly lit. This is why it's also known as a "dim bulb tester" or “light bulb limiter”.

With the Full / Limit Switch, with an amplifier with no shorts, you can flip the switch from Limit to Full and it’s as if you plugged it into a normal outlet. So you don’t have to unplug it from the GACL 100 and plug it into another outlet. This is a handy feature to have that you come to appreciate almost immediately and is something not commonly found on other current limiters.

Includes:

• 18AWG three conductor power cord with three prong plug
• Cord strain relief clamp
•  Light bulb socket

This is a “must have” for vintage guitar amplifier collectors and for amplifier, radio and electronics service, repair and modification. You'll find yourself using it often as one of the first tools you reach for when checking out an amp.

Get a Guitar Amplifier Current Limiter 100 (GACL 100) and feel confident about testing your guitar amplifier for shorts.

Light bulb not included. You must use an incandescent bulb for this to work properly. A 100-watt bulb is recommended.

Ready to ship. There may be a slight variation(s) in appearance due to parts availability.

Disclaimers

·         Use with caution

·         Use with a grounded receptacle

·         Use at your own risk