ATTENTION! VU Meter 1 with transistor. It is a simple circuit of optical index of level of sound signals, adapted in various needs of user., as all other schemes are located on the sites of their rightful owners. We are not liable for the contents of other sites as well as the site having a circuit VU Meter 1 with transistor. It is a simple circuit of optical index of level of sound signals, adapted in various needs of user.. Pressing the button you must get onto a page with VU Meter 1 with transistor. It is a simple circuit of optical index of level of sound signals, adapted in various needs of user..