At 08:12 PM 2/6/00 -0500, Randy wrote: >I have here a brand-new, low-quality microcassette recorder, blessed with a >Mic jack. After choking on RadioShack's prices for a tie-clip mic ($35!??!!! >In your dreams...), I decided I'd like to hook up the 2-wire Electret >element I have here. > >Which brings me to my question: How do I hook up this element? Does it need >any support circuitry? Where do I hook up the two terminals (one is ground) >on the mic to the miniplug? 1. You need to run a resistor to Vcc from the + terminal to bias the FET amplifier. Try to pick a value that gives > 0.5 mA current. 2. You need to tap your output off the + terminal with a coupling capacitor to block the DC bias. Choose a value to match the desired low frequency response with the resistor you used. 3. Connect the - terminal to ground. ================================================================ Robert A. LaBudde, PhD, PAS, Dpl. ACAFS e-mail: ral@lcfltd.com Least Cost Formulations, Ltd. URL: http://lcfltd.com/ 824 Timberlake Drive Tel: 757-467-0954 Virginia Beach, VA 23464-3239 Fax: 757-467-2947 "Vere scire est per causae scire" ================================================================