{"product_id":"doepfer-a-118-2v","title":"Doepfer - A-118-2V","description":"\u003cp data-mce-fragment=\"1\"\u003eModule A-118-2V generates the signals white noise, colored noise, continuous random voltage and stepped random voltage.\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003eThe noise signal is generated 100% analog by amplification of the noise of a transistor. White and colored noise are usually used as audio sources. The random voltages are normally used as control voltages (e.g. for filter frequency or any other voltage controlled parameter).\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003eThe A-118-2V gives you the ability to mix the relative amounts of Red and Blue noise (low\/high frequency component) in the colored noise output.\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003eFor the continuous random voltage the rate of change (Rate) and amplitude (Level) of the random voltage can be adjusted. The continuous random voltage is used as source for the S\u0026amp;H\/T\u0026amp;H unit. The type of operation can be set to S\u0026amp;H (sample and hold) or T\u0026amp;H (track and hold). When T\u0026amp;H is chosen the output signal follows the input signal as long as the Clock input is \"high\". As soon as the clock signal changes to \"low\" the last voltage is stored. When S\u0026amp;H is chosen the input signal is sampled at the rising edge of the Clock signal. For the Clock signal a \"digital\" signal (e.g. Clock, Gate, rectangle output of an LFO) is required. Dual color LEDs are used to indicates the continuous and stepped random voltages.\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eControls:\u003c\/strong\u003e\u003c\/p\u003e \u003cul data-mce-fragment=\"1\"\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eBlue\u003c\/strong\u003e: share of the high frequencies in the the colored noise output\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eRed\u003c\/strong\u003e: share of the low frequencies in the the colored noise output\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eRate\u003c\/strong\u003e: rate of change of the continuous random voltage\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eLevel\u003c\/strong\u003e: amplitude of the continuous random voltage\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eTH\/SH\u003c\/strong\u003e: switches between T\u0026amp;H und S\u0026amp;H\u003c\/li\u003e \u003c\/ul\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eInputs and outputs:\u003c\/strong\u003e\u003c\/p\u003e \u003cul data-mce-fragment=\"1\"\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eRND\u003c\/strong\u003e: continuous random voltage output (with LED display)\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eTH\/SH\u003c\/strong\u003e: stepped random voltage output (with LED display)\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eClk\u003c\/strong\u003e: Clock input of the S\u0026amp;H\/T\u0026amp;H unit\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eC Noise\u003c\/strong\u003e: colored noise output\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e \u003cstrong data-mce-fragment=\"1\"\u003eW Noise\u003c\/strong\u003e: white noise output\u003c\/li\u003e \u003c\/ul\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-size: small;\" data-mce-fragment=\"1\" data-mce-style=\"font-size: small;\"\u003e\u003cu data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff0000; font-family: Arial;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000; font-family: Arial;\"\u003eImportant notes:\u003c\/span\u003e\u003c\/u\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"font-size: small;\" data-mce-fragment=\"1\" data-mce-style=\"font-size: small;\"\u003e\u003cspan style=\"color: #ff0000; font-family: Arial;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000; font-family: Arial;\"\u003eAfter power on it takes a few minutes until the two noise signals and the random signals are generated. The module is not faulty when after power on the signals do not appear immediately !\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: #ff0000; font-family: Arial; font-size: small;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000; font-family: Arial; font-size: small;\"\u003e The S\u0026amp;H\/T\u0026amp;H function is realized by pure analog circuitry (electronic switch followed by a holding capacitor and buffer). Consequently the output voltage drifts a bit in the holding state because the capacitor is discharged by parasitic resistors. The drift depends also upon environmental conditions like humidity or temperature.\u003cbr data-mce-fragment=\"1\"\u003eThe level of the random voltage changes with the settings of the Blue and Red controls. Especially the Red control affects the random voltage level (which is derived by low pass filtering from the colored noise signal) because the Red control changes the share of the low frequencies in the colored noise signal. The effect of the Blue control is much smaller because it changes the share of the high frequencies in the colored noise signal which are filtered out by the low pass of the random circuitry. \u003c\/span\u003e\u003c\/p\u003e \u003chr class=\"line\" data-mce-fragment=\"1\"\u003e \u003cp data-mce-fragment=\"1\"\u003ePower consumption: 20mA at +12V and 20mA at -12V\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003eDepth: 40mm\u003c\/p\u003e HP : 4","brand":"Doepfer","offers":[{"title":"Default Title","offer_id":54725918228821,"sku":null,"price":50.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1071\/1872\/3413\/files\/Screenshot_2021-05-26DoepferA-118-2v.png?v=1787442410","url":"https:\/\/climivor.myshopify.com\/products\/doepfer-a-118-2v","provider":"CLIMIVOR","version":"1.0","type":"link"}