Check the listing for details. 80 (50+20+10) LED Bargraph indicator for power amplifiers PCB only. Condition: New. Listed at 12.00 USD. This module was primarily designed for the RF power amplifier. 50 LEDs bargraph can be used as a forward power indicator, 20 LED bargraph as a reflected power indicator and 10 LED bargraph as temperature or tube grid current indicator. The construction is easy and straightforward. The schematic is based on typical catalogue application. The colour of bargraphs can be selected according to your needs. All components are easily available at radio shops, distributors or at eBay. Technical specification: 3 independent LED bargraphs in bar mode•50 LED •20 LED•10LED Controlled by the cheap LM3914 display driverEach bargraph individually adjustablePower supply +12 and + 5VPCB dimension 146x46mm Schematic, assembly manual and BOM can be downloaded in one PDF file from here Copy this link to your favourite browser =======>> tecdoc.maweb.eu/bargr.pdf For sale is bare PCB only. See my other auctions. I always combine the shipping.3.50 USD shipping = normal letter, not insured, no responsibility of delivery. This is at your own risk!6.0 USD shipping = signed and insured letter, with tracking number. Delivery is sure or you will get a full refund. This is the best choice for you! Important information and terms and conditions: Even the postal services are about 99% reliable, sometimes could be something lost. I do recommend using signed and insured letter.Yes, it costs more, but you can be sure, that you will get it or it can be fully refunded. I am sorry but I cannot be responsible for a normalletter. I cannot manage worldwide postal services. I do always my best, but when I post you goods at the post office, my role is finished.Do not write to me, where is my ..... I want to refund .... etc. I am an honest man and if you don’t believe, please use signed and insured.Especially if you are from Russia, Middle and the Far East, Italy and sometimes from the UK too. If you have selected economy shipping, without tracking. DO NOT OPEN THE CASE or ask for the refund! You took a risk and I cannot do anything. I am giving you a possibility to get a cheap shipping, but it is out of my control if it will be delivered or not. During the last time, there are several cases in Italy and Germany as well. It will lead to the strict requirement for signed and insured shipping ONLY (= more expensive for you). If you want to keep the low shipping fees in my auction, respect my rules, please. DO NOT BELIEVE eBay's estimated delivery time! eBay does not know Czech or Worldwide postal system well. The delivery time is sometimes faster than proposed by eBay, but very often is slower (especially for overseas shipping and the UK included!!). I am trying to do my best, in 90% I am shipping first working day after the purchase, but the delivery time is out of my control. If you are in a hurry, ask me in advance and I will send you an offer for EMS shipping. Thank you for the understanding and cooperation.