Low Pass Filter With Op Amp. Ge Whole House Water Filter
Low Pass Filter With Op Amp
A band-pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. An example of an analogue electronic band-pass filter is an RLC circuit (a resistor–inductor–capacitor circuit).
An Operational Amplifier is technically an electronic amplification circuit with an inverting and non-inverting input and an output, ready to be configured to act in a variety of different ways using various methods.
Operational amplifiers ("op-amps") are important building blocks for a wide range of electronic circuits. They had their origins in analog computers where they were used in many linear, non-linear and frequency-dependent circuits.
in a low position; near the ground; "the branches hung low"
A particularly bad or difficult moment
an air mass of lower pressure; often brings precipitation; "a low moved in over night bringing sleet and snow"
A low point, level or figure
A state of depression or low spirits
less than normal in degree or intensity or amount; "low prices"; "the reservoir is low"
Bench Amplifier PCB
The 1977 ETI Bench Amp's home-made PCB. I opened it up recently to change some of the capacitors, to improve the low-frequency response. It's a 741 op-amp chip as a (switched-gain) preamp, and an LM380 power amp.
Desborough Co-op menswear/hardware
Desborough Co-op Menswear & Hardware shop, April 1992. Art Deco frontage, using concrete and plate glass. Since it was built it has been painted cream and the lettering repainted 'Co-op turquiose'.