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C10, C11 and C12 followed by capacitors C13, C16, C17, C19 and C20 followed by C30 and C31 Be sure to observe the polarity of the capacitors when installing them on the board to prevent circuit damage when power is first applied Install the capacitors into their respective location on the PC board Once inserted, solder the capacitors to the circuit board and then remove the excess leads Now locate diode D1 and D2, and note that the cathode or black band side of the diode points to the battery Diode D1 is the varactor tuning diode Go ahead and install these diodes, then solder them to the board Remove the excess leads Locate transistor Q2 and install it on the PC, once you have identified all the leads Solder Q2 to the board, and then remove the excess leads with your end-cutter Now locate and install inductor L6, the 35-turn slug tuned coil and L7, the 107 I-F transformer Remember to trim the extra lead lengths as needed Locate the FL1, the 107 MHz ceramic filter, it will have three leads and is usually a small square component Solder it in place and remove the excess leads Finally install the 8-pin SA602 local oscillator-mixer at U1 It is advisable to install an IC socket into place in the proper location and then insert the IC into the socket This is good insurance in the event of a possible component failure at some later point When inserting the IC into the socket be sure to first identify which pin is #1 Usually each IC will have a small circle or cut-out on the top or top left side of the IC Usually the pin is just to the right of this indented circle Next we will install the LM324 IC circuit components First locate resistors R13, R14, R15, R16, R17, R18 and R19 followed by resistors R20, R21, R22, R23 and R24 Install these resistors in their respective locations and then solder them in place on the.

Mechanical engineering is the broadest engineering discipline, extending across many interdependent specialties Mechanical engineers work in many industries, and their work varies by industry and function Electrical and electronics engineering is the largest branch of engineering Electrical and electronics engineers work for engineering and business consulting rms; government agencies; electrical and electronic equipment, industrial machinery, and professional and scienti c instruments manufacturers; communications and utilities rms; manufacturers of aircraft and guided missiles; and computer and data processing services rms

their respective holes, followed by L5; see Table 13-3 for winding instructions When you have inserted the inductors, you can solder them in place and then cut the excess component leads flush to the edge of the circuit board Before you go ahead and install the transistors and integrated circuits, refer to the semiconductor pin-out diagram shown in Figure 13-3, which will help you orient the components Now locate and install transistor Q1, being sure you have the correct component before installing it on the PC board Be sure you can identify all three leads as to their correct pin-outs before inserting it into the circuit board to avoid damage to the circuit once power is later applied Solder Q1 to the board and then remove the excess leads Next we are going to move on to installing the Local Oscillator components First install resistors R1, R7, R8, and R9 followed by resistors R10, R11, R12 and then resistors R25, R26 and R28 Solder the resistors into their respective locations and be sure to remove the excess lead lengths Next we will install capacitors C9,

One of the gurus of the accessories mail-order business a West Coast specialist in exotic automotive tools, supplies, and auto novelties revealed some interesting sidelights of this occupation but chose not to give his name This can be a difficult, expensive, and chancy business, but if you know your market and your product and establish a reputable business, you can make a good living at it I started my catalog sales enterprise based on what I learned in my career as a racing mechanic and instructor I couldn t find the quality of automotive tools I demanded, so I went looking abroad I got lucky in my search and reasoned that if I could use betterquality tools, others could, too Well, they could, they can and they do But getting the word out and the orders in has been an experience Mail-order merchants build mailing lists made up of enthusiasts who read certain publications and people whose demographics indicate an interest in automotive quality as well as a certain income bracket But with even the best list sorting, many mail-order catalogs generate orders from only about one-third of

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