low frequency active
1High Frequency Active Auroral Research Program — HAARP is often confused with Project HARP, the High Altitude Research Project (a joint project of The Pentagon and the Canadian Department of National Defence).The High Frequency Active Auroral Research Program (HAARP) is an investigation project …
2High Frequency Active Auroral Research Program — HAARP mit Blick auf Mt Sanford HAARP Empfangsanlagen zur Ionosphärenbeobachtung Das HAARP (High Frequency Active Auroral Research Program, auch High Frequency Active Auroral Research Project) ist ein US amer …
3High Frequency Active Auroral Research Project — HAARP mit Blick auf Mt Sanford HAARP Empfangsanlagen zur Ionosphärenbeobachtung Das HAARP (High Frequency Active Auroral Research Program, auch High Frequency Active Auroral Research Project) ist ein US amer …
4High frequency active auroral research program — 62°23′30″N 145°09′00″O / 62.39167, 145.15 …
5Active noise control — (ANC) (also known as noise cancellation, active noise reduction (ANR) or antinoise) is a method for reducing unwanted sound. Contents 1 Explanation 2 Applications 3 See also 4 …
6Low-pass filter — A low pass filter is a filter that passes low frequency signals but attenuates (reduces the amplitude of) signals with frequencies higher than the cutoff frequency. The actual amount of attenuation for each frequency varies from filter to filter …
7Frequency comb — A frequency comb is the graphic representation of the spectrum of a mode locked laser. An octave spanning comb can be used for mapping radio frequencies into the optical frequency range or it can be used to steer a piezoelectric mirror within a… …
8Low temperature co-fired ceramic — (LTCC) is a well established multi layer technology which has been in use for many years in the microelectronics packaging industry. Each of the layers are processed in parallel and only brought together in an accurately aligned stack immediately …
9Active filter — An active filter is a type of analog electronic filter, distinguished by the use of one or more active components i.e. voltage amplifiers or buffer amplifiers. Typically this will be a vacuum tube, transistor or operational amplifier.Active… …
10Frequency mixer — This article is about non linear mixing operating in the frequency domain. For other types of mixers, see electronic mixer. Frequency Mixer Symbol. In electronics a mixer or frequency mixer is a nonlinear electrical circuit that creates new… …
